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.

Q: Article: In many romantic movies or TV shows one scene always appears. It involves a handsome man standing outside a young woman's window, singing a love song to her to win her over. However, trying to woo a female with songs is not just something that humans do. A few animals sing love songs as well. Birds and elephants are romantic but the latest animal to _ a female might surprise you--it is the humble mouse. You may find it odd to find out that mice sing. We do not hear them because the frequency of their voice is so high. In fact, scientists have known for some time that male mice make special sounds to females, but it has always been assumed that the sounds are produced instinctively and randomly, with little thought going into the process. But new research suggests otherwise. When male mice with different voices were put in a cage together, scientists found that they would gradually change their pitches to sound like one another. But when a female mouse was put in the cage with two males, one male would change his pitch to match the other. "It was usually the smaller animal changing the pitch to match the larger animal," professor Erich Jarvis, leader of the study, from Duke University, US, told BBC News. This ability, known as vocal learning, is rare in the natural world. It had been thought to be limited to some birds, such as parrots--as well as whales and dolphins. The latest findings challenge the long-held opinion that mice cannot learn to adapt their voices. Scientists also found the part of the brain that controls the mice's singing ability. In the experiment, they damaged the cells in this part of the mice's brain and found that the animals couldn't keep their songs in pitch or repeat them any more. This also happened when the mice became deaf. Jarvis said that this finding had changed his understanding of the way mice make sound. "In mice we find that the pathways that are at least modulating these vocalizations are in the forebrain, in places where you actually find them in humans," he said. "If we're not wrong, these findings will be a big boost to scientists studying diseases like autism and anxiety disorders."
Question: Which of the following is proven wrong by the latest discovery?
Options: (A) The frequency of mice's voice is so high that it's impossible for humans to hear it. (B) When male mice make special sounds to females they can't control the sounds. (C) Birds and elephants are both romantic animals that are good at expressing love. (D) Animals like mice are smart even though they often make sounds randomly.

A: B
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Q: Article: On Monday, the Centers for Disease Control and Prevention predicted that 42% of Americans could be overweight by 2030.Our expanding waistlines lead to not only a medical problem, but according to a recent article in The New York Times, it could also endanger personal safety in some situations-in an airplane crash, for example. The New York Times' Christine Negroni reports that engineers and scientists are questioning whether airplane seats are adequately constructed to protect overweight travelers. Government standards for airplane seat strength -first set more than 60 years ago---require that the seats be made for a passenger weighing 170 pounds(77kg).Today, the average American man weighs nearly 194 pounds(88kg) and the average woman 165 pounds(75kg).Negroni reports: "If a heavier person completely fills a seat ,the seat is not likely to behave as intended during a crash,"Robert Salzar,the leading scientist at the Center for Applied Biomechanics at the University of Virginia. "The energy absorption(,) that is built into the aircraft seat is likely to be overpowered and the passengers will not be protected properly". "Nor would the injury be limited to that passenger only," Dr. Salzar said. "If a seat or a seat belt fails,"he said, "those people who are seated nearby could be endangered from the uncontrolled movements of the passenger." Most complaints about airplane seats focus on their lack of comfort and high ticket price, and whether overweight passengers should be made to buy two seats. But The New York Times' article bring up another reason to feel anxious about flying. Investigators of the issue got in touch with the airplane seat and seat belt makers, but they refused to comment on the problem.Experts agreed that crash testing should be done with overweight dummies .Both airplane seats and seat belts should be tested, _ said. Fortunately, however, according to Nora Marshall, a senior adviser at the National Transportation Safety Board, the board's investigators have never seen an accident involving a commercial plane in which the weight of a passenger was a problem.
Question: What is the article in The New York Times mainly conceerned with?
Options: (A) The size of airplane seats and seat belts (B) Safety of overweight airplane passengers (C) Airplane crashes involving commercial planes (D) A medical problem caused by being overweight

A: B
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Q: Article: Shopping in the United States changes a lot.About ninety years ago most people shopped in small stores that were owned by one person or a family.Women went from the bakery to the butcher's to the grocer and on to the fruit and vegetable seller in order to get their food for the week. Then about sixty years ago, supermarkets were born.In a supermarket, people could get all the different kinds of food they needed without going to different stores. The next big change in shopping in the United States was the shopping mall.A shopping mall is a group of stores under one roof.Because malls allowed people to shop without worrying about the weather, they soon became very popular.The mall became a place for people to socialize in addition to shopping.If you walk through a mall, you will see older people sitting, chatting and drinking coffee.Malls are places for teenagers to hang out.Many teens will often just "go to the mall" and spend time with their friends. The recent change in American shopping was the superstore.Large chain stores such as Wal-Mart, Office Depot and Toys "R" Us have been built all across the United States.Because they are so large, they can buy goods at a great discount and sell them much cheaper than smaller stores. Sometimes, when they are built near small towns, many of the small town stores have to close.They just cannot compete with their giant neighbors. And now, online shopping is becoming more and more popular all over the States.People are too busy to go to the physical stores, so they go shopping over the Internet.Online shopping has lots of advantages.For instance, online stores are usually available 24 hours a day.Searching or browsing online shops can be faster than browsing the physical stores.While, online shopping also has its disadvantages.People are at higher risk of being cheated on the part of the merchant than in a physical store.And privacy of personal information may be let out.
Question: Which is the place for people to spend time with others according to the passage?
Options: (A) Shopping malls (B) Small stores (C) Supermarkets (D) Superstores

A:
A
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