单项选择题

Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given 15 seconds to answer the questions. Now listen to the conversation. What prompted this conversation

A.The man is learning how to use a computer.
B.The woman is showing the man how to put page numbers on a document.
C.The man is printing a document.
D.The man is using his computer to do mathematical functions.