根据对话内容，从文后的选项中选出5个最佳选项补全对话。其中有一项为多余选项。

A: May I help you?

B: Yes, please.  

A: OK.  

B: Black.

A: What about this pair?

B: They look nice.  

A: Thirty dollars.

B:

A: Two dollars for one pair and three dollars for two pairs.

B: Great!  

A: Here you are.

A. I'll take the shoes and two pairs of socks. B. How much are they? C. What color do you want? D. Then how much are the socks? E. I need a pair of shoes for school. F. I like the color.