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.

Ex Input:
Article: As the nights get lounger, those who suffer from the winter blues will be planning ways to escape to the sunshine. But there may be a much simpler way of cheering yourself up... simply shining a bright light into your ear canal. Up to one in four Britons suffer from seasonal affective disorder, with seven per cent of the population having full-blown SAD. It is caused by the brain not receiving enough daylight which is needed to trigger serotonin , a hormone that regulates mood. Symptoms range from mild lethargy to depression and insomnia, but a cure might be in sight. Two clinical trials, run by Valkee - who make a device that can shine light into your ear - and the University of Oulu in Finland, have found that carefully targeted light can help prevent the condition. Juuso Nissila, Valkee's co-founder and chief scientist said: "We presented earlier that the human brain is sensitive to light". "These two clinical trials demonstrate that channeling bright light via ear canal into brain's photosensitive areas effectively prevents and treats seasonal affective disorder." The University of Oulu reported that in their first study, 92 per cent of the patients with seasonal affective disorder achieved full remission after a month of daily eight-to-12 minute doses of light from the Valkee. Time Takala, chief physician at the Oulu Deaconess Institute said: "These two trials show that bright light channeled into the brain via ear canal is an important future method to treat seasonal affective disorder." Valkee launched its bright light headset in August 2010. It is classed as a medical device under EU regulations. The device channels bright light direct to the brain via the ear canal to prevent and cure depression, mood swings and even circadian-rhythm disorders such as jet lag. It costs PS185 and looks like an iPod - only the earphones emit light rather than sound.
Question: How many Britons suffer from seasonal affective disorder?
Options: (A) Approximately a quarter. (B) 7%. (C) More than one fourth. (D) 92%.

Ex Output:
A

Ex Input:
Article: Reading is good for you. There is increasing evidence to show that reading isn't merely a way of improving literacy and knowledge, but that it might actually be good for one's mental and physical health, too. In the age of Twitter and short attention spans, reading novels, which requires intense concentration over a long period of time, could be the antidote . Neuroscientists Baroness Susan Greenfield says that reading helps to lengthen attention spans in children and improve their ability to think clearly. "Stories have a structure that encourages our brain to think in sequence, to link cause, effect and significance," she says "It is essential to learn this skill as a small child." "In a computer game, you might rescue a princess, but you don't care about her, you just want to win," she explains, "But a princess in a book has a past, present and future. You can relate to her. You see the world through her eyes" According to professor John Stein, Oxford university, reading is far from a passive activity. "Reading exercises the whole brain," he explains. " When we get lost in a good book, we are doing more than following a story, Imaging what is happening is as good as activating the brain as doing it. In other words, our brains simulate real experiences, and it is just as if we were experiencing them ourselves. This doesn't happen when we are watching a TV or playing computer games." Getting stuck in a good novel appears to be good for one's mental health. Reading helps one not only fights loneliness, but also forget one's own problems for a while. Researchers found that just six minutes of reading could reduce stress levels by more than two-thirds, more than listening to music or going out for a walk. The concentration required to read distracts the mind, easing muscle's tension and slowing the heart rate. Reading may be good for physical health, too, by preventing brain aging and disease.
Question: Which of the following statement is true about playing computer games?
Options: (A) It encourages our brains to think clearly (B) It makes people feel lonely (C) It makes the player concentrate on the result instead of the role in it (D) It can help lengthen one's attention span.

Ex Output:
C

Ex Input:
Article: Canada, the world's second-largest country, has a massive Atlantic coastline . So, the best way to experience it is by car. One week Cross over to Wolfville and the Bay of Fundy via HWY 12. Spend a day criss-crossing the country roads and grassy hills of Cape Blomidon to catch some of the most impressive views of the Fundy tides . The next day, drive east, stopping at wineries and shopping for unique jams and other local foods at Tangled Garden, where you can also cool down with a herb-flavored ice cream. Drive through the rural roads and maybe get lost on the way to Maitland to sign up for a day of white-water rafting, which can be relaxing and one of the most exciting experiences in your life. On the last day, head back to Halifax via east coast Martinique Beach, one of the longest beaches in Nova Scotia, a beautiful place for stretching legs and bird watching. Two weeks With more time, you can go directly up to Cape Breton, along the circuitous roads of the "Cabot Trail", over high sea vista points, where you have to watch for moose on the road. Those with more time can go to Newfoundland and continue on the "Viking Trail" that links the Gros Morne National Park with Leif Eriksson's historic Viking settlement. When to go Outside of June to October the coast will be extremely cold and most businesses will be shut. Where to stay * Lennox Inn 1791 (Lunenburg): Canada's oldest continually operating hotel. * The Olde Lantern Inn & Vineyard (Grand Pre): in the heart of winery and Fundy tide country. Where to eat * Fleur de Sel (Lunenburg): widely considered this coast's finest restaurant. * Hall's Lobster Pound (Hall's Harbour): pick your lobster, get it boiled and enjoy it on a park bench.
Question: If choosing the one-week tour, you are advised to start from _ .
Options: (A) Wolfville (B) Maitland (C) The Bay of Fundy (D) Halifax

Ex Output:
D