Nick Bennett, CFA, is a trader at a stock exchange. Another trader approached Bennett on the floor of the exchange and verbally harassed him about a poorly executed trade. Bennett pushed the trader and knocked him to the ground. Which of the following best describes Bennett’s conduct Bennett:（）

A. did not violate either the CFA Institute Code of Ethics or any Standards of Professional Conduct.

B. violated the CFA Institute Code of Ethics, but did not violate any Standards of Professional Conduct.

C. violated the CFA Institute Code of Ethics and the Standards of Professional Conduct that relates to Professional Misconduct.

构成重大危险源的烟花爆竹，必须在专用仓库内单独存放，实行（）、双人保管制度。

A.双人收发

B.单人收发

C.专人收发

D.多人收发