在组织中，直线与参谋两类不同职权在确保企业有效运动上存在着的关系为（）。

A．领导与被领导

B．一般协作同事

C．负直接责任与协助服务

D．命令与服从

They have decided on a final date by which they expect that everyone （） the council’s offer and have installed that necessary equipment in his house.

A. have taken advantage of

B. will have taken advantage of

C. will take advantage of

D. has taken advantage of