【单选题】

A: Look at this pink watch. It looks great, doesn't it And it's only $ 20. B: ______.
A．It's only twenty dollars. God knows it.

B．I don't want to look at it. After all, it's a watch.
C．The price is good. But I want to buy a more expensive watch.
D．How is it possible that a watch only cost us $20