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.

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.
B

Article: Abby Subark is a mother of two from Boston. "For my kids, I'm nervous. I don't know if they'll be able to achieve their American dream." She may be right. More than hard work or education, the best way to get rich in America is to be born rich. It is the case that somebody who is in the upper third of income, poor scores, in the bottom on tests when they are in eighth grade, is more likely to go to college and finish college than a poor kid with the top scores. That's what the working persons' children are up against. The Economic Policy Institute finds it would take a poor couple with 2 children 9 or 10 generations to achieve middle class status. That's about 200 years. The hallmark of American opportunity has always been the ability to do better than your parents. But compared with similar developed countries, the United States ranks fifth out of six for so-called intergenerational mobility . If you look at the mechanisms for upward mobility that were so readily available 50 years ago, they are becoming out of reach, like plentiful factory jobs with good wages and affordable education and health care. White families are twice as likely as blacks to be upwardly mobile. For most people in America today, _ If you started in the middle-income class, about 40 to 45 percent of what you are making right now is due to the fact that your parents were in the middle-income class. The rest is up to you. But for the millions of people who find themselves below the poverty line and the millions more who are the working poor, their starting point for the American dream leaves them painfully far away from the middle class.
Question: The main idea of the passage is _ .
Options: (A) How the middle class comes about in the U.S. (B) It's hard to realize the American dream for the poor. (C) Wealth and social status depend on family background. (D) Upward mobility in America is never easy.
C

Article: It's good to make mistakes,and here is why. First of all,mistakes are a clear sign that you are trying new things. It's always good to try new things because when you are trying new things you are growing. If you never try anything new,how can you improve?How can you expand?The simple answer is"You can't."Look around you. With very few exceptions,either every-thing you see in your world or every single detail of every single thing is the result of someone trying something new. Another good thing about mistakes is this:When you are making mistakes,you are learning.Consider this:Edison failed 10,000 times before he perfected the 1ight bulb.When asked how it felt to fail that many times,he said that he hadn't failed 10,000 times,but rather had learned 10,000 things that didn't work. Finally,when you make a mistake you are much closer to success.Why?Because when all is said and done,you will have tried some numbers of things before you succeed.Every time you make a mistake you eliminate one of those things and are one step closer.But this all doesn't mean that you should go ahead without considering the consequences of a mistake.Quite the contrary,when you try something new you have to be willing to set some reasonable limits so that in the event that it doesn't work out the way you want it to,you will he in a position to try again. We all have limited time and money so don't blow them all on one approach to a problem.Realize that it probably won't be perfect the first time and allocate these resources properly so you can learn,make corrections,and try it again.If you accept and use your mistakes in this way,you can make great progress in your business and your career. There is an old saying that goes,"If you're not making mistakes,you're not trying hard enough."So go ahead and make mistakes.And learn.And grow.And succeed.
Question: According to the article,one thing you should pay attention to about making mistakes is _ .
Options: (A) avoiding making the same mistakes (B) accepting the punishment willingly (C) taking consequences into consideration1] (D) trying things out one by one
C