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: Dan Bebber is a senior research fellow at the University of Exeter in Britain. He says research has shown that wild plants and animals are moving toward Earth's North and South poles as the planet warms. Mr Bebber wanted to know if the same thing was happening with organisms that attack agricultural crops. He examined reports of first sightings of new insects and diseases around the world. The records came from CABI - the Centre for Agricultural Bioscience International. He says the group began collecting information from developing and industrialized countries years ago. Dan Bebber and his research team studied 612 different organisms - from viruses and bacteria to insects like beetles and butterflies. They found that since 1960, crop pests and diseases have been moving toward the poles at an average rate of about 3 kilometers each year. Mr Bebber says this puts the most productive farmland in the world in danger. "As new species of pests and diseases evolve and potentially the environment for them becomes more _ at higher latitudes, the pressure on the breadbaskets of the world is going to increase." Farmers face other threats. Invasive species passed through trade are also causing problems. Gene Kritsky is an Entomologist at the College of Mount St. Joseph in Ohio. He specialises in the study of insects. He says climate change may improve conditions for some invasive species. "It means that species in other parts of the world that might do well in warmer temperatures can now do well in the breadbasket of America." Another Entomologist Christian Krupke of Purdue University says the effects of these changes will depend very much on the crop, the insect and the disease. But he says the research is a warning sign that people should care about climate change and do something about it.
Question: The purpose of Dan Bebber's research was to find _ .
Options: (A) if farmland could be moved to colder places thanks to global warming (B) if diseases and insects harmful to crops were going towards colder areas (C) if organisms were moving to the north and south poles (D) if the number of crop pests was increasing
Example Output: B

Example Input: Article: When school was out, I hurried to find my sister and get out of the schoolyard before seeing anybody in my class. But Barbara and her friends had beaten us to the playground entrance and they seemed to be waiting for us. Barbara said, "So now you' re in the A class. " She sounded impressed. "What' s the A class? "I asked. Everybody made superior yet faintly envious giggling sounds. "Well, why did you think the teacher moved you to the front of the room, Dopey? Didn' t you know you were in the C class before, way in the back of the room? " Of course I hadn' t known. The Wenatchee fifth grade was bigger than my whole school which had been in North Dakota, and the idea of subdivisions within a grade had never occurred to me. The subdividing for the first marking period had been done before I came to the school, and I had never, in the six weeks I' d been there, talked to anyone long enough to find out about the A, B, and C classes. I still could not understand why that had made such a difference to Barbara and her friends. I didn' t yet know that it was shameful and dirty to be a transient laborer and ridiculous to be from North Dakota. I thought living in a tent was more fun than living in a house. I didn' t know that we were gypsies, really (how that thought would have excited me then! ), and that we were regarded with the suspicion felt by those who plant toward those who do not plant. It didn' t occur to me that we were all looked upon as one more of the untrustworthy natural phenomena, drifting here and there like mists or winds, I didn' t know that I was the only child who had camped on the Baumann' s land ever to get out of the C class. I didn' t know that school administrators and civic leaders held conferences to talk about the problem of transient laborers. I only knew that for two happy days I walked to school with Barbara and her friends, played hopscotch and jumped rope with them at class intervals, and was even invited into the house for some ginger ale--a strange drink I had never tasted before.
Question: The tone of this passage as a whole is _ .
Options: (A) impersonal (B) enthusiastic (C) reflective (D) defensive
Example Output: A

Example Input: Article: Five-year-old Jocelyn Rojas spent all day playing happily with her friends outside her grandmother's apartment building. Her mom, Jaimee, kept her eye on the little girl from a window. At about 4 p.m., Jocelyn walked around the corner of the building to get her bicycle. However, half an hour later, she disappeared. Jaimee called 911. A short time later, police officers and firefighters crowded inthe area, blocking streets and searching the neighborhood. Officers handed out photos of the girl wearing thick-framed glasses. Temar Boggs, 15, a school athlete in track, was with some friends moving a couch into the apartment of his elderly neighbor when one officer approached him and asked if he'd seen Jocelyn. Unfortunately, none of them had seen her. A little bit later, Temar and his friends went to check out the situation. By 6:30 p.m., Jocelyn had been missing for more than two hours, and the search team was worried that the sun would set before she was found. Just at that moment, Temar felt an intense emotion that he was going to find her. He and his friend Chris Garcia, 13, rode alongside, simply keeping a sharp eye out as they circled around. Then Temar spotted a car circling around, as if the driver were unfamiliar with the neighborhood. Temar cycled close and made eye contact with the man behind the wheel, an older guy wearing a red-and-white striped shirt, and saw a tiny blond girl in the passenger seat. Temar instantly realized it must be the missing girl. The boys cycled after the car, but the driver kept moving, winding his way through the neighborhood. Finally, the driver had to park the car ahead of them and pushed open the passenger-side door. A girl slipped out of the car. It was Jocelyn. Temar got off his bike, and carried her to the police. The kidnapper sped away. A police report later identified the man as a 63-ycar-old sex offender. He is still _ . Neil Harkins, chief of the Manheim Police Department, says "The boys' heroics are 'something we don't normally hear about.' It is a very brave thing for young boys to do that." But when asked, Temar, now a tenth-grade student at Lucy Laney High School, says "I didn't do it for attention. I just wanted to help."
Question: Why did Jaimee call 911?
Options: (A) Because her mother was in need of help. (B) Because her house was on fire. (C) Because her daughter was missing. (D) Because she was trapped in the building.
Example Output:
C