A、  B、  C、  C本句是请求在中午之前完成商品库存调查的请求疑问句。应该了解Could you．．．是表示请求的表达。

The flight attendant was nice, wasn’t he?
(A)At gate 25.
(B)I found him very helpful.
(C)Sorry to bother you.

Could you finish the product inventory by noon?
(A)Why did you finish it so soon?
(B)We process the raw materials.
(C)Sure. I’m almost done.