Read the following conversation and answer the question.

W: Excuse me, Professor Hill. May I ask you a few questions?

M: Yes, of course. But I'm sorry I have a class at ten. Why don't you come in my office hours. That is 4 to 5 P.m. Monday, Thursday and Friday.

Question: Why can't professor Hill answer her question now? 

- He will only be available in the afternoon.

- It's not his office hour.

- He doesn't have time.


He doesn't have time.