A、  B、  C、  B本句是询问由谁来准备产品发布会的Who疑问句。

What’s Ms. Robinson’s e-mail address?
(A)The schedules were mailed this afternoon.
(B)She has the same one as before.
(C)They sent it by courier.

Who’s going to make preparations for the product launch?
(A)Production levels are up.
(B)I’ll take care of it.
(C)Sylvia made lunch for us.