When Peter Jiang, CFA, joined Brown Investing, Brown began using a quantitative stock selection model that Peter had developed on his own personal time prior to his employment with Brown. One year later when Peter left the firm, he found the original copy of the model that he had developed in a file at his home and presented it to his new employer, who immediately began using the model. According to the Standards of Practice Handbook, did Peter violate any CFA Institute Standards of professional Conduct（）

A. No.

B. Yes, because he failed to act in Brown’s best interest.

C. Yes, because he misappropriated property that now belonged to Brown.

保护层和被保护层开采设计依据的保护层有效保护范围等有关参数应当根据试验考察确定，并报煤矿企业（）批准后执行。

A.矿长

B.技术负责人

C.防突队长

D.防突技术员