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.

[EX Q]: Article: As part of an effort to improve treatments for life-threatening illnesses, a team of scientists have created rabbits that glow in the dark. The efforts have produced two rabbits out of a litter of eight that went from being a normal, soft white to glowing green in the dark. The rabbits were born at the University of Istanbul as part of the cooperation between scientists from universities in Turkey and Hawaii. The rabbits glow to show that a genetic operation technique can work efficiently. "The green is not important at all--it's just a marker to show the experiment can be done successfully," said University of Hawaii associate professor, Stefan Moisyadi. To produce the glowing effect, researchers injected jellyfish DNA into a mother rabbit's embryos. Then those embryos were put into the mother. Similar experiments have resulted in glowing cockroaches and cats. Eventually, the researchers hope the technique can lead to new ways to produce medicines, Moisyadi said. "The final goal is to develop animals that are able to produce beneficial molecules in their milk that can be cheaply extracted , especially in countries that cannot afford big factories that make drugs, which usually cost US$1bn to build. Then they will be able to produce their own protein-based medication in animals," Moisyadi said. The rabbits are expected to live as long as non-glowing rabbits, but Moisyadi said he understands people can object to this kind of experimentation involving live animals. "To the people against, I say: think, what are the benefits and what is the harm?" Moisyadi said. "And if the benefits outweigh the harm, let's go with the benefits." Moisyadi started developing the project in 2006, and researchers are now waiting to see if pregnant sheep produce similar results.
Question: What do we know about the glowing rabbits?
Options: (A) Their fur became green after the experiment. (B) They were chosen from a special species of rabbits. (C) The color1 that they glow isn't of interest to scientists. (D) They live shorter lives than ordinary rabbits.
[EX A]: C

[EX Q]: Article: A small, white envelope has peeked through the branches of our Christmas tree for the past 10 years. It has no name, no identification, no inscription . My husband Mike hated Christmas. He hated the overspending and the crazy running around at the last minute for the gifts given in desperation because you couldn't think of anything else. So one year I searched for something special to give Mike. The inspiration came in an unusual way. Our son Kevin was 12 and was on the school wrestling team. Shortly before Christmas, there was a non-league match against a team of poor kids. They were dressed in ragged sneakers, and presented a sharp contrast to our boys in their golden uniforms and sparkling new wrestling shoes. As the match began, I was alarmed to see that the other team was wrestling without helmets . Their team obviously could not afford them. We beat them hands down . Mike shook his head sadly. "I wish just one of them could have won," he said. Mike loved kids and enjoyed coaching football and baseball. That's when the idea for his present came. That afternoon, I went to a sports store and bought a load of wrestling headgear and shoes. I sent them anonymously to the poor team. On Christmas Eve, I placed a small, white envelope on the tree, the note inside telling Mike what I had done and that this was his gift from me. Mike's smile was the brightest thing about Christmas that year. In the years that followed, I sent a group of mentally handicapped youngsters to a hockey game, and a check to a pair of elderly brothers whose home had burned to the ground the week before Christmas. The white envelope became the highlight of Christmas. Mike died last year, but on Christmas Eve I still placed an envelope on the tree. The next morning it was joined by three more. Each of our three children had placed a white envelope on the tree for their dad. Mike's spirit, like the Christmas spirit, will always be with us. By Nancy W. Gavin
Question: Why did Mike hate Christmas?
Options: (A) He found each Christmas was just the same as another. (B) He felt Christmas was ruined by constantly having to rush around. (C) He couldn't see the point in exchanging expensive gifts. (D) He felt the Christmas spirit was lost in commercialized gift buying.
[EX A]: D

[EX Q]: Article: Our risk of cancer rises rapidly as we age. So it makes sense that the elderly should be routinely screened for new tumors or doesn't it? While such tracking of cancer is a good thing in general, researchers are increasingly questioning whether all of this testing is necessary for the elderly. With the percentage of people over age 65 expected to nearly double by 2050, it s important to weigh the health benefits of screening against the risks and costs of routine testing. In many cases, screening can lead to additional examinations and operations to remove cancer, which can cause side effects, while the cancers themselves may be slow-growing and may not cause serious health problems in patients' remaining years. But the message that everyone must screen for cancer has become so ingrained that when health care experts recommended that women under 50 and over 74 stop screening for breast cancer, it caused a noisy reaction among doctors, patients and social groups. It's hard to uproot deeply-held beliefs about cancer screening with scientific data. Certainly, there are people over age 75 who have had cancers detected by routine screening, and gained several extra years of life because of treatment. And clearly, people over age 75 who have other risk factors for cancer, such as a family history or previous personal experience with the disease, should continue to get screened regularly. But for the rest, the risk of cancer, while increased at the end of life, must be balanced with other factors like remaining life expectancy. A recent study suggests that doctors start to make more objective decisions about who will truly benefit from screening--especially considering the explosion of the elderly. It's not an easy calculation to make, but one that makes sense for patients. Dr. Otis Brawley said, "Many doctors are ordering these tests purely to cover themselves from medical disputes. We need to think about the wise use of health care, which means making some difficult decisions with elderly patients, and going against the misguided belief that when it comes to health care, more is always better."
Question: Routine cancer screening for the elderly people makes sense because _ .
Options: (A) it is believed to contribute to a long life (B) it is part of their health care package (C) they are more sensitive about the health (D) they are in greater danger of tumor growth
[EX A]:
D