单项选择题

Questions 7 to 10 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions. Now, listen to the conversation.
Why does the man want to give his son a history book

A.He himself likes history very much.
B.His son doesn’t know much about history.
C.History is his son’s favorite subject in college.
D.His son needs the book for a course he is takin