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: Most painters discover a style of painting that suits them and stick to that, especially if people admire their pictures. But Picasso, the great Spanish painter, was like a man who had not yet found his own particular style of painting. He kept on struggling to find the perfect expression till his death in 1973. Some of Picasso's paintings are rich, soft color1ed and beautiful. Others are ugly and cruel and strange. But such paintings allow us to imagine things for ourselves. They force us to say to ourselves, "What does he see that makes him paint like that?" And we begin to look beneath the surface of the things we see. Picasso painted thousands of pictures in different styles. Sometimes he painted the natural look of things. Sometimes he seemed to break them apart and throw the pieces in our faces. He showed us what the mind knows as well as what the eye sees. At the age of 90 he remained as curious about the world as he had been when he was young. That's why people have called him "the youngest painter in the world..
Question: What does the passage mainly tell us?
Options: (A) Picasso didn't find his own style. (B) People can't understand Picasso. (C) Picasso's style of painting. (D) Famous paintings of Picasso.

Ex Output:
C

Ex Input:
Article: Good Teachers A language training school at Yayuncun needs two full-time teachers and three part-time teachers to teach adults, 12 students a class, oral English and business English during afternoons and evenings. Full-time teachers 25--30 hours per week, 10 000--2 000 yuan per month. Part-time teachers can choose the class to teach, 100--150 yuan per hour, according to your experience. Need native English speakers with teaching experience. Please send your RESUME and PICTURE to eslchina@ yahoo.com.cn Writers/Researchers Currently, Fisher's Travel SOS is looking for the freelance writer and researcher with experience in journalism and the ability to computers, it is part-time positions for our project that will take a month to complete. Work is conducted at home, and will take a couple of hours per day or less. Full training is given. Please refer to www.Fisherstravelos.com for more information on our company. Journalists and writers interested in the positions should directly contact Danielle-Chu at daniellechu@ fisherstravelsos. com with your details and CV . Full-time Waiters/Waitresses/Bartenders We are a beautiful modern world famous Tiki Bar looking for FULL-TIME staff --waiters/waitresses/ bartenders for its current expansion. If you are 18 to 25 years old, with good looks, wit and charm, this job is for you. Good English and basic restaurant experience are necessary but not required. Please contact us. Tel: 13370153195 Mail :dacfxa@ 163bi. com Advertising Sales You must have a "sales" personality -- you need to love knocking on doors, giving presentations, closing deals, and keeping your customers happy. You don't need any special degrees, and you don't have to speak English. It would be better if you should have advertising sales experience, but that's not a requirement. If this sounds fit for you, please email your resume to jobs @ chinadeco, com. cu.
Question: You must know English if you want to be _
Options: (A) a teacher (B) a waiter (C) a writer (D) a seller

Ex Output:
A

Ex Input:
Article: Most students try to learn English grammar using grammar textbooks. They study grammar rules and take grammar tests. They use an analytical approach, attempting to memorize, and then apply, a great number of rules. However, research has proved this method inefficient and ineffective. The truth is, the human brain simply cannot consciously remember process and use hundreds of or thousands of grammar rules. Real speech is too fast. Native speakers do not learn grammar in this way, but rather intuitively and unconsciously. They learn in a complete way, not by attempting to memorize individual grammar rules. As a result, native speakers use correct grammar fluently and easily. Fortunately, it is possible for English learners to learn grammar this way. Language teacher Blaine Ray has developed a unique "intuitive" approach to teach English grammar. Her system uses "point of view" stories to teach the patterns of English grammar, allowing students unconsciously to acquire correct grammar without ever studying grammar rules. In this system, the teacher first tells a simple story from one point of view. It may be told about the past, then repeated, but beginning with "since he was a child"; then repeated again, but this time about the future. Listening to these stories allows students intuitively and effortlessly to learn English grammar and makes them be able to use it correctly when they speak. Point of View Stories is a creative new way to study English grammar, and offers hope to millions of frustrated English learners.
Question: Which of the following ways is approved by the author?
Options: (A) Remembering grammar rules. (B) Taking grammar tests. (C) Analyzing grammatical structure. (D) Applying language to situations.

Ex Output:
D