Ron Dunder, CFA, is the CIO for Bling Trust (BT), an investment adviser. Dunder recently assigned one of his portfolio managers, Doug Chetch, to manage several accounts that primarily invest in thinly traded micro-cap stocks. Dunder soon notices that Chetch places many stock trades for these accounts on the last day of the month, toward the market's close. Dunder finds this trading activity unusual and speaks to Chetch, who explains that the trading activity was completed at the client's request. Dunder does not investigate further. Six months later, regulatory authorities sanction BT for manipulating micro-cap stock prices at month end in order to boost account values. Did Dunder violate any CFA Institute Standards of Professional Conduct?

A.Yes,because he failed to reasonably supervise Chetch

B.Yes,because he did not report his findings to regulatory authorities

C.No.