The parents suggested ___ in the hotel room but their kids were anxious to camp out

during the trip .

A．sleep

B．to sleep

C．sleeping

D．having slept

总成本费用被划分为固定成本和变动成本，这样做的目的是（）。

A.利于统计、核算

B.为经营成本提供数据

C.为盈亏平衡分析提供数据

D.为财务分析提供便利