如果表达式--X+y中，--是作为成员函数重载的，+是作为成员函数重载的，则该表达式还可为（ ）。

A．y．operator+(x．operator--(0))

B．y，operator+(x.operator--( ))

C．y．operator+(operator--t(x，0))

D． operator+(x．operator- -t( ))

The muster list shows each rig hand’s muster station，his duties during abandonment，basic instructions，and（）.

A.all emergency signals

B.instructions for lowering the survival craft

C.the time each weekly drill will be held

D.work schedule