【单选题】

Questions 4 to 7 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 doctor suggest the man go to the university health centerA．Physical examinations are given free there.
B．He can get an influenza vaccination there.
C．He’ll be able to get a prescription for medication there.
D．He’ll find literature on nutrition ther