单项选择题

W: Peter, your voice teacher called to ask why you were not at practice for your concert program.
M: I was there but I was standing with a large group and-tm didn’t see me.
Q: Why did the teacher call?()

A.Because he wanted to invite Peter to a concert.
B.Because he thought Peter was not at practice for the concert program.
C.Because he wanted Peter to join the large music group.
D.Because he wanted to see Peter at home.