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: College visits are important.Before you commit years of your life and money to a school, be sure you're choosing a place," that is a good match for your personality and interests.You can't get the "feel' of a school from any guidebook, so be sure to visit the campus.Below are a few tips for getting the most out of your college visit. 1.Explore on your own Of course you should take the official campus tour, but be sure to allow time to hang around on your own. The trained tour guides will show you a school's selling points.But the 1dest and prettiest buildings don't give you the entire picture of a college.Try to walk the extra mile and get the complete picture of the campus. 2.Read the Bulletin Boards When you visit the student center, academic buildings and residence hall, take a few minutes to read the bulletin boards.They provide an easy way to see what's happening on campus.The ads for lectures, clubs and plays can tell you what's going on outside the classrooms. 3.Eat in the Dining Hall You can get a good feel for student life by eating in the dining hall.Try to sit with students if you can.Do the students seem happy or stressed? Also, is the food good? Are there adequate healthy options? Many admission offices will give prospective students coupons for free meals in the dining halls. 4.Visit a Class in Your Major If you know what you want to study, a class visit makes a lot of sense.You'll get to observe other students in your field and see how involved they are in classroom discussion.Try to stay after class for a few minutes and chat with the students to get their impressions of their professors and major.Be sure to call in advance to schedule a classroom visit--most colleges don't allow visitors to drop in on class unannounced. 5.Talk to Lots of Students Your campus tour guide has been trained to market the sch001.Try to talk to students who aren't getting paid to impress you.These important conversations can often provide you with information about co1lege life that isn't part of the admission script.Few university officials wi11 tell you if their students spend all weekend drinking or studying, but a group of random(,) students might. For more tips,please go to collegeapps.about.com.
Question: The best way to know about a college in an official campus tour is _ .
Options: (A) to walk around the campus alone (B) to take pictures of the campus (C) to visit the oldest and prettiest buildings (D) to hire a tour guide
Example Output: A

Example Input: Article: They tell us when to get up or when we're running late for work and whether we are in danger of missing our favourite TV programme. But while our daily routines rely on clocks that tell us the time, science is discovering that our well-being is influenced by a very different kind of timepiece. Circadian rhythms---the human body's own internal clock---have a powerful influence on our health and behaviour. _ are programmed from birth and control functions ranging from temperature and blood pressure to sleep patterns. In recent years researchers have also discovered that this built-in mechanism can influence everything from the way we react to medicines to how well we learn music. The latest example, from experts at Harvard University in the US, shows that the human body clock can even dictate whether or not we are likely to tell the truth. Researchers found it was easier for people to fib in the afternoon because, as they were tired, the self control that would normally prevent them from lying started to break down. Tiredness made it harder to resist the temptation to tell lies---especially if it meant they got a financial reward at the end. "The body clock has a great effect on us all," says Professor Jim Horne from the Sleep Research Centre at Loughborough University. "Most people tend to feel good around late morning and then decline in the early afternoon. But the time most of us will feel our sharpest is between 6pm and 8pm. That's because sleepiness tends to build up throughout the day. By early evening our body clock kicks in to wake us up. One reason may be to ensure we get home safely. When our ancestors were coming home after hunting all day their internal clocks kicked in to get them home in one piece." So what effects do circadian rhythms have and what's the best time of day to take advantage of them?
Question: According to the passage, when are people most quick-thinking?
Options: (A) In the morning. (B) Around midday. (C) In the late afternoon. (D) In the early evening.
Example Output: D

Example Input: Article: Jones worked so hard that made the sparks fly from his hammer.The son of Mr.Smith, a rich neighbor, used to come to see the blacksmith and he would enjoy himself watching how the tradesman worked."Why don't you try your hand to learn to make shoe tacks?" said the blacksmith."Who knows, one day, it may be of use to you." The lazy boy began to see what he could do.But after a little practice he found that he was becoming very skilled and soon he was making some of the finest tacks. Old Mr.Smith died and the son on account of the war lost all his goods.He had to leave home and was forced to take up residence in another country.It so happened that in this village there were numerous shoemakers who were spending a lot of money to buy tacks for their shoes and even at times when they paid high prices they were not always able to get what they wanted, because in that part of the country there was a high demand for soldiers' shoes. Young Smith, who was finding it difficult to earn his daily bread, remembered that he had learned the art of making tacks and had the sudden idea of making a bargain with the shoemakers.He told them that he would make the tacks if they would help to get him settled in his workshop.The shoemakers were only too glad of the offer."How funny it seems," he used to say, "even making tacks can bring a fortune.My trade is more useful to me than were all my former riches."
Question: The reason why young Smith was forced to leave his home town is that _
Options: (A) he was lazy and wasted all the money from his father (B) the price of shoe tacks in another country was high (C) his father died and left nothing for him (D) there was a terrible which broke his peace
Example Output:
C