单选题 Speaker A: I think studying math at school is a waste of time. Who needs it?
Speaker B: ______
A. That's a good idea. I don't like math at all.
B. Yes, I think students only need to study for a few years.
C. I see what you mean. Very few students will become mathematicians in the future.
D. But don't you think math is something that everyone needs to know?