Question: Write a multi-choice question for the following article: Article: On a cold morning at a bus station, a man played six famous pieces of music for about an hour. During that time, about two thousand people went through the station, most of them were on their way to work. 3 minutes later: a middle-aged man noticed there was a musician playing. He slowed down, stopped for a few seconds and went away. 4 minutes later: the musician received his first dollar. A woman threw the money in the box and kept on walking without stopping. 6 minutes later: a young man stopped to listen to him. Then he looked at his watch and started to walk again. 10 minutes later: a 3-year-old boy stopped to look at the musician, but his mother took him away. Several other children did the same as the boy. And nearly all the parents took their children away. 45 minutes later: the musician kept on playing. Only 6 people stopped and stayed for a while. About 20 persons gave him money but left quickly. After 1 hour, the musician finished playing. In the end, he collected $ 32. No one noticed that he had finished playing. No one knew this, but the musician was Joshua Bell, one of the best musicians in the world. At that time, he played one of the most wonderful pieces ever written, with a very expensive violin. If we do not have time to stop and listen to one of the best musicians in the world playing with the most beautiful violin, how many other things are we missing?
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Question: Joshua Bell played six famous pieces of music for _ at a bus station.Options:A half an hourB an hourC fifteen minutesD a dayAnswer:B