It is not your business to reprove the waiter for（）conduct；that belongs to your host.

A.compensating
B.compensation
C.beiing compensated
D.having compensated

A.European use the style of switching knife and fork，but the American does not.
B.American use the style of switching knife and fork，but the European does not.
C.The European and American all switch knife and fork.
D.The European and American all do not switch knife and fork.