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: On a Friday night, a poor young artist stood at the gate of the New York railway station, playing his violin. The music was so great that many people stopped to put some money into the hat of the young man. The next day, the young artist came to the same place, and put his hat on the ground gracefully. Different from the day before, he took out a large piece of paper and laid it under his hat. Then he began to play the violin. It sounded more pleasant than ever. Soon he was surrounded with people who were attracted by the words on that paper. It said, "Last night, a gentleman named George Sang put an important thing into my hat by mistake. Please come to claim it soon." After about half an hour, a middle-aged man rushed through the crowd to the violinist and said, "Yes, it's you. I knew that you were an honest man and would certainly come here." The young violinist asked calmly, "Are you Mr. George Sang?" The man nodded. The violinist asked, "Did you lose something?" "It's a lottery ticket," said the man. The violinist took out a lottery ticket on which George Sang's name was seen. "Is it?" he asked. George nodded and took the lottery ticket and kissed it, then danced with the violinist. The violinist was a student at an arts college and had planned to attend advanced studies in Vienna. Later his classmate asked the violinist, "At that time you needed money to pay the tuition and you had to play the violin in the railway station every day to make money. Why didn't you keep the lottery ticket for yourself?" The violinist said, "Although I don't have much money, I live happily. But if I lose honesty I won't be happy forever." Through our lives, we can gain a lot and lose so much. But being honest should always be with us.
Question: What did the young artist do at the railway station on Friday?
Options: (A) He played the violin to make some money. (B) He waited for the train to Vienna. zxxk (C) He came to buy a train ticket to Vienna. (D) He walked around the New York railway station.

Ex Output:
A

Ex Input:
Article: I've lived my whole life in Spanish Harlem with my mom, and I never have a father. I have friends who ended up in jail or pregnancy. But Mr.Clark wouldn't let that happen. Mr. Clark worked long hours, making sure I did my work. My grades rose. In fact ,our whole fifth-grade class's scores rose in math and reading. In sixth grade, I entered the gifted program, and Mr. Clark was the teacher. I felt so lucky to have him for a second year ! None of us were surprised when Mr.Clark was selected as Disney's 2004 Teacher of the Year. When he learned he'd won, he said he would draw three names out of a hat; those students would go with him toprefix = st1 /Los Angelesto get the award. But when it came time to draw names, Mr. Clark said, " You're all going." He got donations to fly all 37of us out to Disneyland inCaliforniaand put us at the Hilton. We were there for three days. People were amazed, but Mr. Clark really cared about us. There's no way I can imagine most teachers doing that. No way. But he saw something in us that nobody else saw. On graduation day ,there were a lot of tears. We didn't want his class to end. In 2005,he moved toAtlanta, but we always kept in touch. He started giving speeches about education and wrote a best-selling book based on his classroom rules. In 2007,Mr.Clark took some of us on a trip toSouth Africato deliver school supplies and visit orphanages. It was the most amazing experience of my life. It's now my dream to start a group of women's clubs one day, helping people from all backgrounds. I'm about to become a senior atHarlemRenaissanceHigh School. My grades are beautiful now, and I'm hoping to go to law school eventually. This fall, Mr.Clark will be opening the Ron Clark Academy inAtlanta, a school for kids who have potential but aren't reaching it, kids who are like I was -- until Mr.Clark came along.
Question: Which of the following is the best title for the passage?
Options: (A) How I Improved My Grades (B) Trips with My Teacher (C) Lucky to Have Him (D) My High School Years

Ex Output:
C

Ex Input:
Article: Qixi Festival, the Chinese equivalent of Valentine's Day that fell yesterday, was not only a disappointment for forgotten lovers, but also for businessmen left with empty pockets. The cold reception has prompted cultural experts to seriously worry that the lovers' festival, marked for generations since the Han Dynasty(206 BC-AD 220),is dying out. Some have even called for legislation to make the festival a legal --Chinese Lovers' Day, which falls on the seventh day of the seventh month of the lunar year. But the effectiveness of such a measure is in doubt, although efforts to preserve traditional festivals deserve highly praise. A growing number of traditional Chinese festivals, such as the Dragon Boat Festival and Mid-Autumn Festival, share the same fate of the Qixi Festival. Young people are showing less interest in traditional culture as symbolized by these festivals.Even if all traditional festivals are finally made legal, the risk of them becoming purely formalized celebrations with little meaning is not removed.If the younger generation fails to identify with the cultural significance of these holidays, there is little that can be done. While complaining about traditional festivals' fading appeal, decision-makers should reflect on cultural protection. Undeniably, our country has done a bad job of preserving culture and traditional festivals, compared to neighbouring Japan and the Republic of Korea(ROK). The 2,500-year-old Dragon Boat Festival falls on the fifth day of the fifth lunar month. The traditional customs and ceremonies of the occasion, which originated in China, have been better preserved in the ROK. Only a few years ago did China begin to realize the significance of preserving intangible cultural heritage when the ROK planned to apply to the United Nations Educational, Scientific and Cultural Organization to list its version of the Dragon Boat Festival as an important example of intangible culture. Concern about the traditional holidays also reminds people of the growing influence of foreign cultures as the country opens wider to the outside world. With traditional festivals becoming less important and imports such as Christmas and Valentine's Day gaining widespread popularity, the public including cultural professionals have tended to measure traditional Chinese festivals in economic terms. Business rather than culture has begun to play a dominant role. More and more people are preoccupied with how much money can be made during the holidays. In fact what makes traditional festivals unique and what keeps them alive is their cultural elements. After all, it is unique culture that contributes to the world's diversity with globalization.
Question: What makes Chinese cultural experts worry that the lovers' festival is dying out?
Options: (A) The disappointment for both businessmen and lovers. (B) The cold reacting of the public to Qixi Festival. (C) The failure to make traditional Chinese festivals legal. (D) The action to preserve culture and traditional festivals.

Ex Output:
B