单项选择题

[听力原文]
M: You know, even I could do a better job of writing than selling.
W: Oh you could, could you, Jack

What does the man think about Jack()

A.He hopes Jack will get a better job after school.
B.He thinks Jack can be a writer.
C.He thinks that Jack should get more exercise.
D.He is not satisfied with Jack’s earning.