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 Input:
Article: Answer the following questions by using the information taken from a dictionary page.(You may read the questions first.) jaguar: n.a type of large, yellow-colored cat with black markings found in the southwestern region of the U.S.and in Central and South America. jargon: 1.n.an unknown language that seems strange or impossible to understand.2.n.a language made up of two or more other languages: His jargon was a mixture of French and English- 3.n. the special vocabulary of a field or profession: Her report on computers was filled with jargon.4.n.speech that doesn't make sense. jaunt: 1.n.a trip taken for fun.2.v.to go on a brief pleasant trip: We jaunted to the country last Saturday. javelin: 1.n.a spear most commonly used as weapon or in hunting.2.n.the contest in which a javelin is thrown.3.n.a lightweight metal or wooden spear that is thrown in track-and-field contests.4, v.to strike, as with ajavelin. jazz: 1.n.a type of music that originated in New Orleans and is characterized by rhythmic eats.2.n.popular dance music influenced by jazz..3.n.slang empty talk.4.ad.of or like jazz: a jazz band, jazz records. Jennet; n.a small Spanish horse.
Question: Which meaning of the word javelin is used in the sentence below?
Options: (A) Definition 1 (B) Definition 2 (C) Definition 3 (D) Definition 4

Ex Output:
C

Ex Input:
Article: Roughly speaking, teachers in traditional education may feel that students are too young to know much about the world, and have to be told what to do most of the time. By contrast, open education offers teachers quite different feelings. Students are expected to be responsible for their own education--to discover subjects by themselves instead of being made to study them. This way of teaching allows the students to grow independently and to develop their own interests in many subjects. Some students who do badly in a traditional classroom will be happier in an open classroom and enjoy learning. They will not have to worry about grades or rules at all. However, many students won't do well in an open classroom. For these students, they will do little in school if there are too few rules. They will not make good use of open education, which is so different from traditional class, because they may have a problem getting used to making so many choices on their own. For them it is important to have some rules to direct them. They may worry about the rules even when there are no rules. In addition to that, some traditional teachers do not believe in open education and do not like it either. Since both of some good points and bad points of the open education have been explained clearly, you may have your own opinion on the issue. Personally, I think that the concept of open education is good only in theory. In actual fact, it may not work very well in a real class or school. I believe, most students, but of course not all students, need some structure in their classes. They may want and need to have rules. In some cases, they must be made to study some subjects. Many students are pleased to find subjects they have to study interesting. They would not study those subjects if they did not have to.
Question: Open education allows the students to _ .
Options: (A) grow as the educated (B) be responsible for their life (C) discover subjects outside class (D) develop their own interests

Ex Output:
D

Ex Input:
Article: Walk through the Amazon rainforest today and you will find it steamy, warm, damp and thick. But if you had been there around 15,000 years ago, during the last ice age, would it have been the same? For more than 30 years, scientists have been arguing about how rainforests might have reacted to the cold, dry climate of the ice ages, but till now, no one has reached a satisfying answer. Rainforests like the Amazon are important for mopping up CO2 from the atmosphere and helping to solve global warming. Currently the trees in the Amazon take in around 500 million tons of CO2 each year: equal to the total amount of CO2 given off in the UK each year. But how will the Amazon react to the future climate change? If it gets drier, will it survive and continue to draw down CO2? Scientists hope that they will be able to learn in advance how the rainforest will manage in the future by understanding how rainforests reacted to climate change in the past. Unfortunately, collecting information is incredibly difficult. To study the past climate, scientists need to look at fossilized pollen kept in lake mud, Going back to the last ice age means drilling down into lake sediments , which requires specialized equipment and heavy machinery. There are very few roads and paths, or places to land helicopters and aeroplanes. Rivers tend to be the easiest way to enter the forest, but this still leaves vast areas between the rivers completely unsampled . So far, only a handful of cores have been drilled that go back to the last ice age and none of them provide enough information to prove how the Amazon forest reacts to climate change.
Question: How do scientists study the past climate change?
Options: (A) By predicting the climate change in the future. (B) By drilling down deep into land sediments. (C) By analyzing fossilized pollen in lake mud. (D) By taking samples from rivers in the Amazon.

Ex Output:
C