With respect to the CFA Institute Code of Ethics and Standards of Professional Conduct, which of the following is least likely to prompt an inquiry by the CFA Institute Professional Conduct Program

A. Written complaints received by Professional Conduct staffs.
B. A violation report submitted by CFA examination proctors.
C. Internal investigations of members conducted by local CFA societies.

下列不属于继发性鞘膜积液病因的是（）

A.阴囊外伤

B.腹外疝

C.急性睾丸炎

D.附睾炎

E.精索炎