（） is primarily concerned with defining and controlling what is and is not included in the project.

A．Project Time Management

B．Project Cost Management

C．Project Scope management

D．Project Communications Management

园林中山石踏跺设计与应用表述错误的是（）。

A、用石选择扁平状

B、以不等边三角形、多边形间砌

C、中设垂带，石级断面上收下挑

D、拼缝上下交错，上石压下缝