【单选题】

Woman: I hear that our boss donated a lot of money to the No. 3 Middle School.
Man: A lot of money That's only a drop in the bucket. The sum of money he gave is only chickenfeed.
Question: What does the man mean

A．The boss didn't get a lot of money.

B．The boss didn't give a lot of money.
C．The money the boss gave was hardly enough.
D．The boss made a contribution for a chicken farm.