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: Let's pretend we're sailing down the Rhine River on a pleasure boat. The Rhine is one of the main waterways of Germany, and the river traffic is heavy. It's interesting to watch the many boats going up and down the river. But the river traffic is not nearly so interesting as the beautiful scenery along the banks and hillsides. The boat is passing many old castles. We can see people working in the vineyards on the hillsides. There are vineyards as far as the eye can see. Wine from the Rhine Valley is famous all over the world. Suddenly our boat slows down and begins to turn a little. We are coming to a sharp bend in the river. On our right we can see a rocky cliff over 400 feet high. At first it looks quite ordinary, but there is nothing ordinary about it. There are many stories, poems, and songs about the cliff. We are looking at the Lorelei. Then someone on the boat begins to sing in German, the song of the Lorelei. It is a song about a beautiful siren who has lured many sailors to their deaths. The siren is supposed to sit on the rock combing her long golden hair and singing. The sailors who hear her forget to steer , and the current of river hurls their boats on the rocks and dashes them to pieces. Soon other people on the boat begin to sing. The beautiful song adds to special magic to the moment, and you begin to realize why so many people have made this trip down the Rhine to see the rock of the Lorelei.
Question: The most interesting thing to those who are sailing down the Rhine River on a pleasure boat is _ .
Options: (A) to watch many boats going up and down the river (B) to see the beautiful scene along the banks and hillsides (C) to hear a song about beautiful siren (D) to see a beautiful siren combing her golden hair
Example Output: B

Example Input: Article: New research at Washington University School of Medicine in St. Louis shows that people who struggle with mood problems or addiction can safely quit smoking and that kicking the habit is associated with improved mental health. Cavazos-Rehg, an assistant professor of psychiatry, found that quitting or significantly cutting back on cigarette smoking was linked to improved mental health outcomes. Quitting altogether or reducing by half the number of cigarettes smoked daily was associated with lower risk for mood disorders like depression, as well as a lower likelihood of alcohol and drug problems. "We don't know if their mental health improves first and then they are more motivated to quit smoking or if quitting smoking leads to an improvement in mental health," Cavazos-Rehg said. "But either way, our findings show a strong link between quitting and a better psychiatric outlook." In addition, she believes the serious health risks associated with smoking make it important for doctors to work with their patients to quit, regardless of other psychiatric problems. "About half of all smokers die from related to smoking, so we need to remember that as complicated as it can be to treat mental health issues, smoking cigarettes also causes very serious illnesses that can lead to death," she explained. Cavazos-Rehg and her team analyzed questionnaires gathered as part of the National Epidemiologic Study on Alcohol and Related Conditions. In the early 2000s, just under 35,000 people were surveyed. As part of the study, they answered questions about drinking, smoking and mental health in two interviews conducted three years apart. The researchers focused on data from 4,800 daily smokers. Those who had addiction or other psychiatric problems at the time of the first survey were less likely to have those same problems three years later if they had quit smoking. And those who hadn't had psychiatric problems at the initial survey were less likely to develop those problems later if they already had quit. "We really need to spread the word and encourage doctors and patients to tackle these problems," Cavazos-Rehg said. "When a patient is ready to focus on other mental health issues, it may be an ideal time to address smoking cessation, too."
Question: What is the main idea of the passage?
Options: (A) Smoking was associated with alcohol and drug problems. (B) Quitting smoking may help to improve mental health. (C) Smoking can lead to cancer or other deadly problems. (D) Those who had mental problem are more motivated to quit smoking.
Example Output: B

Example Input: Article: We are not rich by what we possess but rather by what we can do without. ----Immauel Kant Many times my friend June would say, "If I ever get rich, I'm getting a completely new wardrobe and moving into a bigger apartment." I thought of her words and her chances of being rich are about as good as mine. But, to everyone's surprise, a few years ago June did come to large inheritance . At first June said very little about the money. As the initial shock disappeared, she became excited, June is a great believer in making lists, so I was surprised to find her writing down all the ways she would spend her new wealth. As time went on, she started revising the list. What had been midway down the list was now at the top. At last, I said to her, "You know, it isn't necessary to spend all your inheritance at once. Take come time; think about it." "I know, I know," she answered with a little bit anger. Then one morning June called, "I've decided how I want to use my new inheritance. I want to see what you think," she said. This wasn't something I looked forward to, but we had been friends so long. As we sat, June spread a sheet of paper on the table. To my great surprise, she had written only two words: Charities, and Grandchildren-in that order. Though I had promised to keep quiet, I couldn't keep from asking how she came to this decision. "Well," she said, "I took your advice and thought about it." She added, "Helping others means a lot to me, so I'm hoping this gift will help people in need." I interrupted, "But what about this big apartment you most hope to have?" "At first it was hard, but it doesn't seem as important any more", she answered with a smile. Then June moved her hand, and I could see a few words written in tiny letters at the bottom of the page. After having a look at the small print, I burst into laughter. June had written: AND one new wardrobe.
Question: From the passage we can learn that the writer at first _ .
Options: (A) was richer than her friend June (B) was no richer than her friend June (C) was poorer than her friend June (D) was interested in money as June
Example Output:
B