— Where are Jack and Mike?

— They  ____ the furniture you asked for into thehouse.  [ ]

A. have been carrying          

B. carried    

C. have been carried            

D. were carried

在下列销售人员的薪酬设计方案中，属于极端做法的方法是( )。

A．二元薪酬追踪系统

B．职业生涯曲线

C．直接薪水方法

D．直接佣金制