The nurse is caring for a client who is suicidal. When accompanying the client to the bathroom, the nurse should （）.

A．give him privacy in the bathroom.

B．allow him to shave.

C．open the window and allow him to get some fresh air.

D．observe him.

下列楼梯中属于按楼梯平面形式分类的为（）

A.辅助楼梯

B.封闭楼梯间

C.双跑平行楼梯

D.主要楼梯