月病假率等于（）

A.（患某病的人数／受检查的总人数）×100%

B.［某时期内新发病人数／（同时期该群体的平均人数一原患病人数）］×100%

C.［某月病假总人时（节或日）数／同月授课总人时（节或日）数］×100%

D.全学期因病缺课人日数／该学期全校学生平均数

E.（某期间内发病的例数／同时期该群体或地区的平均人数）×100%

The nurse is caring for a client in an acute manic state. What’s the most effective nursing action for this client()

A. Assigning him to group activities.

B. Reducing his stimulation.

C. Assisting him with self-care.

D. Helping him express his feelings.