Which of the followings in not a good proof to show that Mr. Holland is a good teacher or a good father?

A.His students learn a lot from Mr. Holland.

B.He sets a good role model for his son as a good father and a good teacher.

C.He dreams of composing a symphony that can make him rich and famous.

D.A lot of students attend his retirement celebration.

正确答案：He dreams of composing a symphony that can make him rich and famous.