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: My son Paul got a job in a large chain of guitar stores. It was the first time for him to do such a job. The pay was based on a small salary and his sales. They offered him some training on how to get close to a customer, introduce the product and make the sale. However, he wasn't doing well. He was very _ . One morning Paul said to me, "Mum, you used to be a sales trainer. Can you tell me why I'm not doing well?" I said, "The key is that you must love the people you are selling your product to, not count the money you will make in your mind. Do what is best for them even though they are just buying something small or a cheap guitar." He promised he would try it. After some time, his sales began to increase. He became the top salesman in the store and his salary was increased. Within six months, he was one of the top ten salespeople in the whole chains of guitar stores around the country. His company held a big party to honor the top ten salespeople. New cars, great hotels and delicious dinners were the prizes. Paul was of course included. After the dinner, the boss of the company asked, "Paul, how did you make it?" Paul answered, " I don't want to tell you. You won't believe me." "Of course I'll believe you. Tell me." "I started loving the people who came in," Paul told him. The boss replied, "Okay Paul, now tell me how you REALLY make it."
Question: His mother suggested that Paul should _ .
Options: (A) always introduce the cheap guitars to customers (B) show love and respect to his customers (C) work out how much he would make before each sale (D) learn from the top ten salespeople in his company
Example Output: B

Example Input: Article: Social media is one of the fastest-growing industries in today's world. A study conducted by the US think tank Pew Research Center showed that 92 percent of teenagers go online daily. The wide spread of social media has changed nearly all parts of teenagers' lives. Changing relationships High school student Elly Cooper from Illinois said social media often reduces face-to-face communication. "It makes in-person relationships harder because people give attention to their phones instead of their boyfriends or girlfriends," Cooper said. There's also a greater possibility of things getting lost in translation over social media. "If half of your relationship is over social media, you don't really know how the other person is reacting," Sienna Schulte, a junior student from Illinois, said. Yet, some people believe social media has made it easier to start relationships with anyone from anywhere. Beth Kaplan from Illinois met her long-distance friend through social media. He currently lives in Scotland, but they're still able to frequently communicate with one another. "I can feel close to someone that I'm talking to via FaceTime," Kaplan said. Wanting to be "liked" The rise of social media has changed the way teenagers see themselves. The 19-year-old Essena O'Neill announced on the social networking service Instagram that she was quitting social media because it made her obsessed with appearing perfect online. Negative comments also can do great damage to a teenager's self-esteem . In particular, anonymous social media apps such as Yik Yak may provide opportunities for cyber bullying . The app allows users within 5 miles (8 km) to create and add comments to everything. Teenagers who get negative comments on these sites can't help but feel hurt. Opening new doors However, Armin Korsos, a student from Illinois, takes advantage of the comments he receives over social media to improve his videos on the social networking site Youtube. "Social media can help people show themselves and their talents to the world in a way that was never possible before," Korsos said. But Korsos recognizes that social media has become a distraction . "Social media, though it helps people connect with their friends and stay updated, is not all necessary."
Question: What is the article mainly about?
Options: (A) The major problems with social media. (B) The impact of social media on teenagers. (C) How teenagers benefit from social media. (D) Why social media appeals so much to teenagers.
Example Output: B

Example Input: Article: Country-dwellers often say the constant noise, heavy traffic and crowds of the city would drive them mad. Well, they might be right, according to the latest research. City residents are more likely to develop mental illnesses than those who live in villages, a study has found. Researchers from Cardiff university examined the lifestyles of more than 200,000 people in Sweden and found that those who lived in urban areas were more at risk from mental illnesses than people who lived in villages. The experts don't know exactly why this is but they suggest that town and city residents are more likely to be ostracized by those around them. They are more likely to experience discrimination if they do not fit in, which can lead to them feeling anxious and even developing mental illnesses. Dr Stanley Zammit, who led the research said that people living in towns and cities are more likely to develop other mental illnesses that result in personality changes -- a condition known as non-affective psychosis . Earlier this year an official report found that village-dwellers live an average of two years longer than those living in towns and cities. According to figures from the Office of National Statistics in the UK, men who live in villages are likely to live for between 78 and 79 years, while those in towns and cities can expect to survive to an age of 76. Women on average survive to their 81stbirthday in towns and cities, but live to between 82 and 83 in villages. The small marked town of Wimborne Minster in rural Dorset was named the healthiest place to live in.
Question: What is the passage mainly about?
Options: (A) Country-dwellers are more likely to develop mental illnesses. (B) City-dwellers are more likely to develop mental illnesses. (C) Country-dwellers live longer than city-dwellers. (D) City-dwellers live longer than country-dwellers.
Example Output:
B