In this task, you're given an article, a question which often contains a blank and four options (associated with "A", "B", "C", "D"). Your task is to find the correct answer (from the given options) for the question from the given article and return one of the options from "A", "B", "C", and "D". Do not generate anything else apart from one of the following characters: "A", "B", "C", "D". There is only one correct answer for each question.

Example Input: Article: Dear Textual Healing, I would be very interested in your recommendations for any books to help me through a difficult time of my life. At 57, I am feeling a bit lost. I have a wonderful, loving husband and bright, caring teenage daughter but I am lonely and have lost my spark for life. I have always taken care of everyone and managed a career, but, after the death of my father this summer, my difficulties as a child in a terribly abnormal family have come back to me regularly. I have become unfocused and often alone while my husband is away frequently on business and my daughter busy with school and friends. I am seeking the help of a therapist and taking care of myself but I would love to read something to help me "get my groove back" and reengage with life. PC Dear PC, From the letter you've given us about your life, it's no wonder you're feeling a little lost. But before prescribing titles to help you get your groove back, I'd recommend taking a journey into Rebecca Solnit's non-fiction book,A Field Guide to Getting Lost, which is packed with the wisdom of everyone from Pat Barker to Thoreau and Keats. The word lost is rooted in the Old Norse "los", meaning the disbanding of an army. "This origin suggests soldiers falling out of formation to go home, ceasing fighting with the wide world. I worry now that many people never disband their armies, never go beyond what they know," Solnit writes. So instead of fearing that lost feeling, try seeing its potential for discovery. Explorers, remember, are always lost simply because they're forever someplace new. "Leave the door open for the unknown, the door into the dark," Solnit advises. "That's where the most important things come from, where you yourself came from, and where you will go." For something that asks a little less of the reader while still giving plenty in return, try a dose (--) of Anne Tyler, the beloved creator of numerous heroes whose serious conditions will move anyone who finds themselves in a midlife difficult situation. One such character is 53-year-old Rebecca Davitch, the heroine ofBack When We Were Grownups. Like you, she's combined marriage and motherhood with a career but suddenly finds herself feeling lonely in her own home. Could it be, she wonders, that she's "turned into the wrong person"? Don't be fooled by the way this novel ambles along -- as Rebecca revisits youthful ambitions and the college boyfriend she abandoned, it asks some heart-rending questions before arriving at a place of graceful, joyous acceptance. Along similar lines, I'm also going to recommendThe Unlikely Pilgrimage of Harold Fryby Rachel Joyce. Its hero is 65 when he learns that a former colleague sick. On his way to post her a note,he decides instead to visit her -- on foot, from his home in deepest Devon to England's northernmost town, more than 600 miles away. You don't manage that without focus! It's a journey to a holy place that will take him 87 days to complete, during which he considers his childhood, marriage and relationship with his son, and becomes an accidental media sensation . By the time he reaches his destination, you'll feel anything but tired. Finally, Ruth Ozeki's novelA Tale for the Time Beingwill charm the missing spark back into your life. Combining the diary of a sad Tokyo teenager with the story of the middle-aged novelist who finds it, washed ashore on a remote island off the coast of British Columbia, it's a beautiful illustration of how our lives touch -- and are touched by -- others in ways we mightn't even be aware of. This "Man Booker Prize" finalist has plenty to teach about Zen Buddhism, and unless you happen to live in one of its settings, it provides a bracing change of scene, too. One other suggestion: books, as we all know, make great companions but that doesn't mean they can't be enjoyed in the company of others. If you find yourself home alone, why not slip one into your back pack and head out to a favourite cafe.
Question: What has mainly led to PC's negative attitude to life?
Options: (A) The lack of helpful books. (B) The blow of her father's death. (C) The contrast between her devotion to others and her being ignored. (D) The contrast between her easy life and her family members busy life.
Example Output: C

Example Input: Article: When people who are nature lovers worldwide wish all humans to realize the importance of their natural surroundings, many Australians are turning caring for the environment into a way of life. Julie, an Australian housewife in Brisbane is one such example. Even though autumn is approaching Australia's Brisbane in April, one can still watch colorful blooming flowers in Julie's little garden, as she tells that in her community,"Each of us has a beautiful yard. The whole community, from children to elderly people, takes care of the environment as if they are taking care of their own garden." "Gardening is the most popular club in our community," she says. "A lot of retired people don't just regularly organize gardening lectures, but also personally visit families in the community to provide gardening training. So you can see that flowers continue to blossom in our gardens throughout the year." Talking about her people's sense of caring for the environment, Julie says when people in the community take along their dog, they always carry a garbage bag to deal with the dog's waste. "In our community, you will never experience the embarrassment of stepping on the dirty waste while you are walking on the grass," says Julie with a smile. "Taking care of the dog's waste can also help to develop children's sense of responsibility!" As to protecting water resources, the Australian government has made strict rules for families. Julie says, "We certainly would not use tap water to water the flowers!" She says almost every family in her community has a huge tank used to store rainwater, which is later used as the resource of all outdoor water use, including car washing and watering the garden. This year, they also asked people to connect the water tank with their toilets.
Question: Why can flowers be seen all year round in Julie's community?
Options: (A) Families are taught how to take care of their gardens. (B) Gardening lessons are often given by professors. (C) The local government provides free gardening training. (D) There is enough rainwater to water the flowers regularly.
Example Output: A

Example Input: Article: As we all know, nature has supplied every animal except man with some covering for his body such as fur, feathers, hair, and shells as a thick hide. But man has nothing but a thin skin. If someone were to ask you, "Why did human beings start to cover their bodies with clothes?" most would answer, "To keep themselves warm, of course." It is only when we begin to think about it a little that we realize that clothes are worn for a great many reasons that have nothing to do with our need for warmth at all. For example, we wear clothes to some degree in order to decorate ourselves -- to make ourselves, if possible, look more dignified or nicer. Clothes of a special kind are often worn to show that the wearer has authority or power. The individual wearing them is treated with respect because he occupies a certain office. The judge on the Bench, for example, might look a very ordinary and unimpressive figure without his wig and gown. Clothes are an important part of ceremony, whether it is connected with belief, the law, parliament, and royalty, the fighting forces or the state. How very different the Queen's Coronation ceremony would have looked without the robes, coronets and the cloth of gold. Sometimes, even in some modern countries people wear some article of clothing, or some jewel, because they believe that it will bring them luck or protect them from evil or illness, or because it is connected with their beliefs. None of these reasons for wearing clothes -- to decorate ourselves, to show our position in the world, for ceremonial purposes, for "luck", to give ourselves dignity and authority -- have anything to do with our need for warmth.
Question: From the passage we know that wearing clothes is man's basic necessity to _ .
Options: (A) protect skin (B) show beauty (C) keep warm (D) bring luck
Example Output:
C