从方框中选出能填入空白处的最佳选项，其中有一个是多余的。

A: Can I help you?

B: Yes, please.

A: OK. What size do you want?

B:

A: How about this one?

B: What's the price?

A: Nice dollars.

B: And how much are these yellow shorts?

A: Twenty dollars for one pair and thirty-five dollars for two pairs.

B: Great!