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: Every year, as Spring Festival draws near, most Chinese people will get excited to make preparation for the most important festival and make plan for the winter break. It is a little like Christmas in the United States, but there are some differences between the two festivals. Both the major Chinese and the major Western holidays come during the cold season, and special food is expected. In western countries, cookies and cakes begin just after Thanksgiving in November and show up everywhere. Turkey, potatoes and other food come later. Similar thing happens in China. Entering lunar December, most families will make shopping plans for _ and food is certainly one of the most important things to be considered. At the end of the month, both parents in each family will be very busy---the father is busy buying food while the mother is busy cooking. A deeper similarity is tradition. Christmas, as the letters "Christ" suggests, began as a holiday to celebrate the birthday of Jesus Christ. Many people pray on this day. In China, people living in cities or towns, though they don't plan to sow seeds this month, still celebrate on the big day for farmers. Followers of both holidays are also different from each other. While Chinese people travel to the homes of elder relatives, Americans usually call or send cards. Westerners prefer Christmas carols to fireworks. In Christmas, many family gifts come together instead of one by one, since adults may have only one day free to celebrate. But the most curious difference is about students. Chinese students going home for Spring Festival sometimes report that they get bored by the end of vacation, yet American students seldom get bored around Christmas and western New Year. Not everyone enjoys classic holiday traditions. Students in western countries may get upset, as too much homework, travel or bad family relations may destroy the short holiday season. In China, more and more college students choose to travel or work during the winter holiday instead of going home to stay with their families. It's against the tradition but many people accept it.
Question: What does the writer mainly want to tell us in this passage?
Options: (A) Food in different festivals. (B) Differences between two festivals. (C) Festivals in China and western countries. (D) Traditional celebrations in different countries.

Ex Output:
B

Ex Input:
Article: Mary Jean Price Walls graduated second in her class in 1950.She had high hopes when she applied to a local college,Southwest Missouri State College.But after sending off her application,she spent months waiting for a reply.It never came. Worse than simply being denied admission ,the school didn't reply to her at all.It wasn't a matter of her school records,but of her skin color:Wallsis African American,and in those days,that fact alone closed a lot of doors. "I was sad and I was hurt,"Walls toldABCNews."I did not expect the skin color would affect my application.I thought I could go to university like other students." Four years later,the government declared that all schools should not discriminate against African Americans-- but it was too late for Walls.She'd moved on with her life, becoming a wife and a mother,and working as an elevator operator.She retired last year,at the age of 77. She stayed quiet about the unfairness she'd faced in Missouri State.Her son,Terry,went through school records and found that she'd been the first black student to ever apply to the college.Today,four percent of the Southwest Missouri State College body is African American--including Terry. Although it's too late for Missouri State to change the past,the school is awarding Walls with an honorary degree from the school.While she knows it's too late for herto change the course of her own life with the degree,it's a chance for her to show her family that Missouri State has changed in the last 60 years,and there's not a single door closed to them anymore.
Question: Walls couldn't enter the local college because _ .
Options: (A) her examination performance is too bad (B) girls were not allowed to go to college (C) she was an AfricanAmerican student (D) her parents had no enough money to support her

Ex Output:
C

Ex Input:
Article: If, at the end of a conversation somebody says to me, "as soon as I know, I'll ring you up", he is talking too much for granted. He is proposing to attempt the impossible. So I have to say, "I'm afraid you can't. You see. I'm not on the telephone. I just haven't got a telephone." Why don't you have a telephone? Not because I pretend to be wise or pose as unusual. There are two chief reasons: because I don't really like the telephone and because I find I can still work and play, eat, breathe and sleep without it. Why don't I like the telephone? Because I think it is a pest and a time-waster. It may create unnecessary suspense and anxiety, as when you wait for an expected call that doesn't come; or irritating delay, as when you keep ringing a number that is always engaged. As for speaking in a public telephone box, which seems to me really horrible. You would not use it unless you were in a hurry, and because you are in a hurry you will find other people waiting before you. When you do get into the box, you are half asphyxiated by stale, unventilated air, flavored with cheap face-powder and chain-smoking; and by the time you have begun your conversation your back is chilled by the cold look of somebody who is fidgeting to take your place. If you have a telephone in your own house, you will admit that it tends to ring when you least want it to ring; when you are asleep, or in the middle of a meal or a conversation, or when you are just going out, or when you are in your bath. Are you strong-minded enough to ignore it, to say to yourself, "Ah, well, it will all be the same in a hundred years' time. You are not. You think there may be some important news or message for you. Have you never rushed dripping from the bath, or chewing from the table, or dazed from the bed, only to be told that you are a wrong number? Suppose you ignore the telephone when it rings, and suppose that, for once, somebody has an important message for you. I can assure you that if a message is really important it will reach you sooner or later. Think of the proverb: "ill news travels apace." I must say good news seems to travel just as fast. And think of the saying: "the truth will out." It will.
Question: The write does not like telephone in a public telephone box, because _ .
Options: (A) it is full of unventilated air (B) it is far from his home (C) it is not convenient (D) he must pay for it

Ex Output:
A