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: 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
Example solution: B
Example 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.

Problem: Article: NEW YORK-Workers in New York City and nearby towns raced to fix damaged power grids and traffic systems after "superstorm" Sandy left a strip of destruction across 15 US states and cut power to more than 8 million people. "In 108 years, our employees have never faced a challenge like the one that faces us now," said Joseph Lhota, chairman of MTA, which operates New York City's subway system that has been suspended due to historic flooding in some tunnels. Partial subway service was restarted on Thursday. "All of us at the MTA are committed to restoring the system as quickly as we can to help bring New York back to normal." Much of the lower half of Manhattan is still without power. Thousands of homes and small businesses may have to put up with darkness at least until this weekend. Nearby areas are struggling to recover from flooding and damages after Hurricane Sandy struck the US East Coast and made a landfall at New Jersey Monday evening. At least 115 people have died from Sandy in the United States since Monday, including 39 from New York City, police said. In New Jersey, the death toll had reached 13 as search and rescue teams gained access to stricken areas. As Sandy faded further inland, bus and bridge services in New York City were restarted late Tuesday, but road blocking was ubiquitous in Manhattan because of a loss of subway service across NYC. The UN Headquarters in New York, located along the East River, were closed for three days due to the storm and suffered damage from high winds and flooding. It reopened on Thursday. With superstorm Sandy fading, Obama and his Republican challenger Mitt Romney Thursday were back on the campaign trail, trying to make up for the lost time as they dashed towards the finish line. The two candidates were making closing arguments before Americans head to polling stations across the country next Tuesday in the question, "Where will the voters go to cast their ballots --particularly for parts of New York City and New Jersey where hundreds of thousands of people remained without power?" Local election boards are assessing their polling sites to decide which ones would be up and running by Tuesday's election while utility companies hope to get the electricity back on time for Election Day.
Question: According to the passage, the superstorm Sandy _ .
Options: (A) has been the worst ever since 108 years ago (B) has swept across 15 US states and killed 115 people (C) has destroyed The UN Headquarters in New York (D) has ruined the polling stations across the country
Solution: A