When a hotel overbooks a sell-out date， it is taking the risk that（）

A.more guests will under-stay than the number of rooms by which the hotel has overbooked

B.more guests will cancel than the number of rooms by which the hotel has overbooked

C.more guests will no-show than the number of rooms by which the hotel has overbooked

D.all of the above

正确答案：all of the above