A psychiatric client who was voluntarily admitted now wishes to be discharged from the hospital, against medical advice. What's the most important assessment the nurse should make of the client ？（）

A．Ability to care for himself.

B．Degree of danger to self and others.

C．Level of psychosis.

D．Intended compliance with aftercare.

颅脑损伤后出现的昏迷时间与损伤程度成正比，轻度颅脑损伤一般小于_______；中度者在_______以内；重度者在_______以上。