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: 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 output: 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.
Q: Article: Steve Jobs made technology fun.The co-founder of Apple died last Wednesday at the age of fifty-six He had fought for years against cancer.Mourners gathered outside his house in Palo Alto, California, and Apple stores around the world. Tim Bajarin, president of a high-tech research and consulting company, said "If you actually look at a tech leader, they're really happy if they have one hit in their life.Steve Jobs has the Apple II, the Mac, the iPod, the iPhone, the iPad and Pixar." Steve Jobs was a college dropout.He was adopted by a machinist and his wife, an accountant.They supported his early interest in electronics. He and his friend Steve Wozniak started Apple Computer--now just called Apple--in nineteen seventy-six.They stayed at the company until nineteen eighty-five.That year, Steve Wozniak returned to college and Steve Jobs left in a dispute with the chief executive. Mr.Jobs then formed his own company, called NeXT Computer.He rejoined Apple in nineteen ninety-seven after it bought NeXT.He helped remake Apple from a business that was in bad shape then to one of the most valuable companies in the world today. Steve Wozniak, speaking on CNN, remembered his longtime friend as a "great visionary and leader'' and a "marketing genius ". President Obama said in a statement: "By building one of the planet's most successful companies from his garage, _ .By making computers personal and putting the Internet in our pockets, he made the information revolution not only accessible, but intuitive and fun." David Carroll is a professor at Parsons School of Design in New York City.He says Steve Jobs not only revolutionized technology, he also revolutionized American business. "The fact that he was able to redesign American commerce top to bottom and across is really stunning .He probably will be considered an industrial giant on the scale of Thomas Edison and Henry Ford, so one of the great[s] of all time." David Carroll said. Steve Jobs stepped down as Apple's chief executive in August because of his health.He died a day after the company released a new iPhone version that met with limited excitement.Apple's new chief, Tim Cook, will also have to deal with the new Kindle Fire tablet computer from Amazon.com.It costs less than half as much as an iPad but also does less.
Question: Why did people all over the world mourn Steve Jobs?
Options: (A) He was very courageous in the face of cancer. (B) He became very rich though dropping out college. (C) He released a new iPhone version before death. (D) He revolutionized technology and made it enjoyable.
A:
D