单项选择题

[听力原文]
W: Would you like a cup of coffee to help you wake up
M: A cup of coffee I need two or three.

What does the man mean()

A.He needs to sleep for two or three hours.
B.He wants to buy a set of coffee cups.
C.He will need more than one cup of coffee.
D.He has been awake for two or three hours.