单项选择题

Questions 4 to 6 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.
Why does the woman want the man to sign up for the course

A.He shows much interest in the course.
B.He plays an instrument the group needs.
C.She helps him to improve his playing skill.
D.She thinks he’s the best musician at the colleg