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.
One example is below.
Q: Article: Homework can put you in a bad mood , and that might actually be a good thing. Researchers from the University of Plymouth in England doubted whether mood might affect the way kids learn. To find out the answer, they did two experiments with children. The first experiment tested 30 kids. Someshapes were hidden inside a different, larger picture. The kids had to find the small shapes while sitting in a room with either cheerful or sad music playing in the background. To test their mood, the scientists asked the kids to point to one of five faces, from happy to sad. Children who listened to cheerful music tended to point to the smiley faces while the others pointed to the unhappy ones. The researchers found that sad kids took at least a second less to find the small shapes. They also found an average of three or four more shapes. In the second experiment, 61 children watched one of two scenes from a film. One scene was happy, and the other was sad. Just like in the first experiment, kids who saw the sad scene acted better compared to the others. The researchers guessed that feeling down makes people more likely to focus on a problem or difficult situation. Not all scientists agree with them, however. Other studies argued that maybe, that cheerful music in the first experiment distracted kids from finding shapes. While scientists work on finding out the answers, it still might be wise to choose when to do your tasks according to your mood. After eating a delicious ice cream, for example, write an essay. 
 Question: Researchers did experiments on kids in order to find out _ . 
 Options: (A) how they really feel when they are learning (B) whether mood affects their learning ability (C) what methods are easy for kids to learn (D) the relationship between sadness and happiness
A: B
Rationale: It is clearly mentioned in the article that to the check effect of mood on children is the main purpose of the experiment. So, B is the correct answer.
Q: Article: When I was six, my mother placed me in a boarding home. For the next nine years, I never slept in a room that contained less than 30 other kids in it. So, when I was promoted to senior at the high school for my final year there, I had the greatest pleasure of rooming with just one other classmate, and the added feature of a semi-private bathroom. We seniors also had the feature of walking around the campus in special hats, we called senior bonnets. So all the other kids would know we were the highest in the high school. As seniors, we frequently went on field trips outside the campus, including city museums, city hall, colleges and theatres. The highlight was a senior class trip to Washington, D.C., where we sat in on a session of Congress, visited the monument and many other government sites around the city. Another benefit of being seniors was that many of us on athletic and other extra-curricular teams were elected to high ranking for the year. I had the honor and pleasure of being chosen captain of our state championship swim team, while my roommate was voted president of the drama club. Graduation services were on a sunny day in June. Each of us had looked forward to this moment for ten years. Now we were going out on our own to complete freedom, and we should have been flooded with joy. However, to my surprise, I found myself crying, something I hadn't done for years. I noticed many of my classmates usually proud of their macho guy  attitudes, were also wiping away tears. We knew we would never be together again as we were on that graduation day. Our senior year ended with deep feelings of sadness for our loss, as well as joy for our emerging into a new world beyond the school campus. 
 Question: What made the author feel most pleasant after becoming a senior for his last year? 
 Options: (A) He needn't study in a boarding home from then on. (B) There would be at least 30 classmates in his class. (C) His best friend would share a room with him. (D) He would share a room with only one classmate.
A:
D