Under the Prudent Man Rule, trustees are least likely to set the proper balance of proprieties between:（）

A. principle protection and current income.

B. the interests of sponsors and the interests of beneficiaries.

C. expected income every year and probable safety of principle.

下列哪项不属于特异性心肌病（）

A.药物中毒性心肌病

B.酒精性心肌病

C.围生期心肌病

D.克山病

E.限制性心肌病