Sheila Schleif, CFA, is an equity analyst at an investment banking division of Mokara Financial Group, a full service financial group. Schleif uses a multi-factor computer model to make stock recommendations for all clients of Mokara. Schleif discovers the model contains an error. If the error were corrected, her most recent buy recommendation communicated to all clients would change to a sell. Schleif corrects the error, changing the buy to a sell recommendation, and then simultaneously distributes via e-mail the revision to all investment banking clients who received the initial recommendation. A week later, Schleif sells the same shares she held in her personal portfolio. Concerning her actions, Schleif most likely violated which of the following CFA Institute Standards of Professional Conduct?

A.Fair Dealing

B.Priority of Transactions

C.Diligence and Reasonable Basis