从方框中选择恰当的句子完成下面的对话，有一个多余选项。
A: What can I do for you?
B: I want to buy a dress for myself.
A: OK. 小题1:_____
B: M. And my favorite colour is yellow. 小题2:_____
A: Sorry. 小题3:____ But there is one in L.
B: Let me try it on. Oh, it is a little long for me.
A: 小题4:____
B: OK. How long do I need to wait?
A: About a week. 小题5:_ Everything will be half price.
B: That sounds good.

A. And then we will have a big sale. B. What size do you often wear? C. If you really need it, you have to wait for several days.  D. Please help me find a yellow one. E. We don’t have any yellow dresses in M.