单项选择题

Questions 1 to 3 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the conversation.
When did the man start to study art

A.When he was in high school.
B.After he went to a trade school.
C.After he became a junior in college.
D.After he became a senior in colleg