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: Testing new drugs for safety and effectiveness is a costly process in the United States. It also can take:lot of time. Some scientists are now designing silicon computer chips that act like human organs. The scientists think they have found a way to make the process faster and more economical. The silicon computer chips are smaller than a child's hand. Each one has living cells that act and react like a human organ. The chips are being created as part of a program to test the safety of drug compounds. It is called the Tissue Chip for Drug Screening Program. It is a project of the US National Center for Advancing Tmnslational Sciences, or NCATS. Danilo Tagle is the center's Associate Director. He says a three-dimensional computer chip can be designed to act like a human lung. Some computer chips contain very small models of the human digestive system. They copy the real function or duties of the human stomach and intestine , moving when breaking down food. Drugs are added to the tiny organs for testing through instruments known as micro-tubes. Experiments with the tissue chips have produced more detailed information than tests using animal or cell models. NCATS just announced$17 million in grants to develop an entire human organ system over the next three years.
Question: Why are scientists designing silicon computer chips acting like human organs?
Options: (A) To treat the patients whose body organs don't work well. (B) To examine the health condition of human organs. (C) To make testing new drugs faster and cheaper. (D) .To further study the function of human organs.
Example Output: C

Example Input: 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
Example Output: C

Example Input: Article: Sixteen-year-old Karlos Dearman's future is looking much brighter than he might previously have imagined. "I love bikes, but I've never thought I'd end up with working with them," he says. "This program has changed my life." Karlos is learning to refurbish old bicycles in the workshop of ReCycle Bikes, an independent non-profit bike project in Sheffield. It provides training chances for young people aged 14 to 16 with the help of the local government, particularly those struggling in mainstream education or rejected from school. "It's about engaging young people with education and youth training by teaching them work and life skills," explains Des Pearce, workshop training manager. "These young people have so much potential, but often don't realize it." Founded in 2001, ReCycle Bikes repairs bicycles donated by the public, which are sold for PS20 after refurbished. Abandoned bikes supplied by the government make sure a steady flow of bikes, but a recently formed partnership with Sheffield University should improve the further development. "The student population presents a large and ready market," says Pearce. "So we approached the university last year and offered to host bike sales on the campus . They thought it was a great idea, and agreed to provide us with more support. This means we can train young people to repair extra 500 bikes over three years." Having set up ReCycle Bikes on his own, Pearce now has the staff and resources to track the profession development of those who have passed through his workshop. "But we are planning exit interviews with the young people to make sure what they plan to do, and these will allow us to check on their progress," says Pearce. That most of the teenagers enjoy the work is, according to Pearce, easily explained. "Most kids have ridden a bike and know how to oil a chain or mend a flat tyre. As low-cost transport, cycling gives the young and old a sense of freedom and independence, and the effect on their well-being is big. Add to that a growing concern for the environment, and it's no surprise that bike sales are on the increase."
Question: From the passage, we know ReCycle Bikes _ .
Options: (A) is a popular brand of bikes (B) provides training chances for young people (C) is a training project offered by the government (D) aims at making money by selling refurbished bicycles
Example Output:
B