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: The Dixie Chicks used to be known as the biggest-selling female group in music history. Now they are known as one of the most disputed . In 2003, Natalie Maines, the lead singer of the Dixie Chicks, was in the news. During a concert in London, she criticized President Bush for his political actions. She spoke less than two weeks before the invasion of Iraq. The Chicks did not realize the effect of those words. They soon lost their fans. They even received death threats. The comment changed the direction of their lives, music, and beliefs. Now, their new album Taking the Long Way shows their new musical direction. It is about acting and thinking freely. Maines openly sings about criticizing the president. She says she learned about herself by expressing her beliefs. The album also represents the Chicks' new musical style. In the past, they only sang songs influenced by country music. They did not always write their own music. Now, they are adding some rock sounds to their song collection, and they wrote every song on the album. Taking the Long Way quickly became the top-selling album in the country when it was released at the end of May. But many country music radio stations will not play music by the Dixie Chicks. Many people in the country music industry now oppose the band for criticizing the president. However, the Dixie Chicks continue to stress the importance of standing firmly and bravely for what they believe in --no matter what people may think or say.
Question: What caused the Dixie Chicks to be the most disputed musical group?
Options: (A) It's unusual that the members of this music group are all women. (B) The lead singer said negative comments about the president's political actions. (C) The music group changed their musical style after they lost fans. (D) Their recently released album is still very popular around the whole country.
Example Output: B

Example Input: Article: Last August, Joe and Mary Mahoney began looking at colleges for their 17-year-old daughter, Maureen. With a checklist of criteria in hand, the Dallas family looked around the country visiting half a dozen schools. They sought a university that offered the teenager's intended major, one located near a large city, and a campus where their daughter would be safe. "The safety issue is a big one," says Joe Mahoney, who quickly discovered he wasn't alone in his worries. On campus tours other parents voiced similar concerns, and the same question was always asked: what about crime? But when college officials always gave the same answer -----"That's not a problem here,"-----Mahoney began to feel uneasy. "No crime whatever?" comments Mahoney today. "I just don't _ it." Nor should he: in 1999 the U.S. Department of education had reports of nearly 400,000 serious crimes on or around our campuses. "Parents need to understand that times have changed since they went to college," says David Nichols, author ofCreating a Safe Campus. "Campus crime mirrors the rest of the nation." But getting accurate information isn't easy. Colleges must report crime statistics by law, but some hold back for fear of bad publicity , leaving the honest ones looking dangerous. "The truth may not always be serious," warns S. Daniel Carter of Security on Campus, Inc., the nation's leading campus safety watchdog group. To help concerned parents, Carter promised to visit campuses and talk to experts around the country to find out major crime issues and effective solutions.
Question: It is often difficult to get correct information on campus crime because some colleges _ .
Options: (A) receive too many visitors (B) mirror the rest of the nation (C) hide the truth of campus crime (D) have too many watchdog groups
Example Output: C

Example Input: Article: A single night of taking the drug Ecstasy can cause serious brain damage and speed up the start of Parkinson's disease , scientists say. Just two or three Ecstasy tablets can permanently destroy brain cells that affect movement and reasoning, according to American research that links the drug to Parkinson's for the first time. A study by a team at Johns Hopkins University in Baltimore, Maryland, involving squirrel monkeys and baboons found that both species suffered permanent damage to key cells, which are lost in Parkinson's, after receiving three low doses of Ecstasy at three-hour periods. The study is particularly important because baboons are one of the best animal models for the human brain. George Ricaurte, who led the research, said that the widespread abuse of drug might have caused severe damage. "The most troubling result is that young adults using Ecstasy may be increasing their risk of developing Parkinsonism as they get older." Alan Leshner, a former director of the US National Institute on Drug Abuse, said, "This study emphasizes the multi-aspect damage that Ecstasy causes to users. We've long known that repeated use damages brain cells. But this study shows that even very occasional use can have long-lasting effects on many different brain systems. It sends an important message to young people: don't experiment with your own brain." Janet Betts, a mother whose teenage daughter Leah died after a single Ecstasy tablet in 1995, said, "This comes as no surprise. But people can't see the effects at first, and they say it won't happen to them. We'll see the symptoms later, just as we have with smoking."
Question: The article is intended to _ .
Options: (A) explain the bad effects of drugs on people's health (B) warn young people of the risk of taking the drug Ecstasy (C) persuade people out of such bad habits as smoking and using drugs (D) tell us the links between the drug Ecstasy and the animal models
Example Output:
B