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: 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
Solution is here: B
Explanation: 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.

Now, solve this: Article: One of the most famous basketball-players in the New Castle's history was paralyzed  in a wheelchair one day...and was walking the next. Citizens of New Castle simply refer to it as "The Miracle". Joel Haler woke up in his dorm room at Hope College last October totally paralyzed from the waist down. Four hospitals later, the only way he could walk was through Robotic Walking Treatment. "This past Tuesday, I was doing the Robotic walk and lasted ten minutes," Joel said. After that, he gave up. Joel wanted to accept the inevitable  and cancelled his next Robotic Walking Treatment appointment. Then, the night before his cancelled appointment, he woke up to a terrible pain. An hour and a half later, the serious pain left him with an unusual feeling in his legs. "As it continued to move up my legs, it became more and more painful and it took an hour and a half to reach my hips ," Joel recalled. "I stood up and walked into my parents' room. 'Mom and dad, look!'," he said proudly. "He said something and I was like, 'Joel! Joel! You're walking! You're walking!' We jumped out of bed, cried and hugged," Joel's mom Karen remembered. "I burst into tears. It's hard seeing your son not be able to walk, but he was standing there, walking," Joel's father Eric said, tearfully. It was Thursday, January 23, when he could finally walk. That date made perfect sense to Joel. He had dreamt of a calendar that only said "J 23". He didn't know what to make of it until "a little boy at church, four years old, came up to me and said, 'you will walk on a Thursday'," Joel recalled. So the 20-year-old college student, who could only walk with the aid of robot on Tuesday, was walking on his own. 
 Question: According to the passage, "The Miracle" is that_. 
 Options: (A) Joel Haler became the most famous basketball player (B) Robotic Walking Treatment could cure paralysis (C) Joel Haler could walk again after three months' paralysis (D) a paralyzed boy could play basketball well
Solution:
C