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: The tallest building in the United States, the One World Trade Center, opened on November 3, 2014 in New York. The building is 1,776 feet tall, making it the 3rd tallest building in the world. It has 104 floors. The building stands in the area where the twin towers of the World Trade Center once stood. On September 11, 2001, a group of terrorists destroyed these twin towers and killed nearly 3,000 people. It took 8 years to build the new One World Trade Center. Does the height of the building in feet reminds you of something in history? _ is the year when the United States declared its independence from Great Britain. One problem with such a tall building is how to clean the windows. Well, a platform hangs from ropes, and workers on the platform clean windows. On November 12, while two men were busy cleaning windows, a rope of the platform broke near the 68th floor. The two men were saved by cutting a hole in the glass window. The two tallest buildings in the world are the BurjKhalifa in Dubai, UAE and the Makkah Royal Clock Tower in Mecca, Saudi Arabia.
Question: When did the One World Trade Center open?
Options: (A) September 11, 2001. (B) September 11, 2011. (C) November 3, 2006. (D) November 3, 2014.

Ex Output:
D

Ex Input:
Article: The television news feature about Ben Heckmann, an eighth grader from Farmington, Minn, was breathless in its praise. "At 14, he has accomplished something many adults can't achieve," the reporter said, "Ben is a twice-published author." But Ben's two "Velvet Black" books, describing a fictional rock band, were not picked from a pile of manuscripts by an eagle eyed publisher. They were self-published, at the cost of $400 by Ben's parents. Over the past five years, print-on-demand technology and a growing number of self publishing companies whose books can be sold online have inspired writers of all ages to avoid the traditional gatekeeping system for determining who could call himself a "published author." The mothers and fathers who foot the bill say they are simply trying to encourage their children, in the same way that other parents buy equipment for a promising baseball player. But others see self-publishing as a lost opportunity to teach children about hardship and perseverance. Mr. Robbins, a critic, thinks it is wonderful to start writing at a young age, but worries self-publishing sends the wrong message. "There are no prodigies in literature," he said. "Literature requires experience, in a way that mathematics and music do not." Alan Rinzler, a publishing industry veteran, suggested parents hire a professional editor like him to work with their child to tear a manuscript apart and help make a better. Ben's father, Ken, said Ben's ambitions "weren't to knockHarry Potteroff the list," but "to get that good feeling inside that you've done something." Ajla Dizdarevic, 12, who has self-published two books of poetry, has been on television and in local newspapers. "Being a published author," she said, "was always a dream of mine." Her new dream: three books by age 15.
Question: Which of the following is true of Ben?
Options: (A) He has achieved something unusual for his age. (B) His self-published books were well received. (C) His manuscripts were favored by the publisher. (D) He was thought little of by the public media.

Ex Output:
A

Ex Input:
Article: Colin walked slowly home from school. He looked across the hills at the little Irish fishing village. It did not seem like Christmas Eve. Perhaps this was because it still had not snowed. But Colin knew there was another reason--a reason he did not dare whisper even in his heart. He looked toward the sea. There was no ship. And seven days ago his father's fishing boat hadn't gone home in time. "I'll bring you a small sheep dog from the Shetland Isles," Colin's father told him the morning he left. But now it was Christmas Eve. Colin looked toward the lighthouse, high on the hill. For seven days, there had been no light to guide his father's ship. Colin pushed open the door of his cottage. "We'll need more peat for the fire, Colin," said his mother as he entered. "It has burned itself out. And it's near time to light the Christmas candle. Everybody in Ireland lights a candle on Christmas Eve, even when there's sadness in the house. It shows that your house and heart are open to strangers. I've two candles, one for each of us. If you gather some peat, we'll be ready for supper soon." Colin nodded and went outside. He led their donkey up the hill. But while he was staring at the lighthouse, Colin had an idea. He came to the lighthouse and knocked on the door. Mr. Duffy, the keeper, opened the door. "What's up, young man?" "Mr. Duffy," said Colin, "what did you use to light the lighthouse?" "Well, we used an oil lamp. But we've no oil to burn." "Maybe kerosene would do," suggested Colin. "Well, I suppose," Mr. Duffy thought. "But you wouldn't find even a little spare kerosene in this village. Everyone is so poor ..." Colin was gone before Mr. Duffy could finish his sentence. He ran back to the cottage. Then he ran out with four buckets. Colin could see candles glowing in nearly every cottage in the valley. A candle on Christmas Eve meant that a stranger would be welcome and given whatever he asked. He didn't stop running until he came to the first house. "Could you spare me just a half cup of kerosene from your lamp?" he asked. Colin went to every house where a candle was shining . In one hour he had filled two buckets. Slowly and painfully he carried them up to the lighthouse door. "What's this?" Mr. Duffy asked. "This won't keep the lamp burning for more than an hour or so." "I'll get more!" Colin shouted as he started down the hill. After three more long hours, Colin had gathered five more buckets of kerosene. He was on his way with the sixth pail, when the tower suddenly shone with light. The light spread toward the dark heart of the sea like a finger pointing home. Mr. Duffy had lighted the lamp! It was very late when Colin reached home. His mother jumped from her seat near the fire. "Colin, where have you been? You've had no supper, nor lighted your candle!" "Oh, mom! I've lighted a candle, and it's a big one!" Colin slept soundly that night, dreaming of candles. Suddenly, a loud shout aroused him from his sleep. "The boat! The boat was just different in the fog, lost." Colin rushed to the window. His mother was running toward the harbor. It was true! There floated his father's boat. Colin ran across the yard and raced to the harbor. He felt a wet wind on his face. It was beginning to snow. Oh, it was Christmas morning all right, falling right from heaven and into his heart!
Question: What Colin dare not whisper even in his heart was that _ .
Options: (A) there was no way to light the lighthouse (B) his father wouldn't come back home any more (C) his father didn't return home from the sea as expected (D) his family couldn't afford any Christmas presents

Ex Output:
C