You are a project manager for residential construction. As a project manager, you must be especially concerned with building codes particularly in the quality planning process. You must ensure that building codes are reflected in your project plans because ______ .

A．standards and regulations are an input to quality planning

B．quality audits serve to ensure there is compliance with regulations

C．they are a cost associated with quality initiatives

D．compliance with standards is the primary objective of quality control

其它车辆向停有“△w”车辆的溜放或送车时，必须留有（）“天窗”，严禁溜放连挂。

A、5米；

B、10米；

C、20米