单项选择题

如果表达式x * y+z中,“*”是作为友元函数重载的,“+”是作为成员函数重载的,则该表达式还可为

A.operator+(operator * (x, y) ,Z)
B.operator+(operator * (x, y) ,z)
C.operator * (operator+(x, y) ,z)
D.operator+(operator * (x, y) )