A、Ask the professor when he’ll be available. B、Help the woman to contact the professor. C、Solve the question for the woman. D、As

M: I don’t want to buy the book Prof. Smith told us to read for the coming exam. Do you think you could lend me yours?
W: Well, I’m not using it right now, but I think I really need to keep it handy just in case.
Q: What does the woman mean?

W: I really need to get in touch with Professor Nelson. I’ve got a chemistry problem I can’t solve. But there’re always students in his office.
M: I’m attending an evening course given by Professor Nelson. Why don’t you give me your question and let me ask him instead?
Q: What will the man most probably do for the woman?