A Broker Has Transferred Stock Held in His Own Name

A broker has transferred stock held in his own name in order to fill a request from a client and made a profit in doing so. Has the broker breached any duties to his client in this instance?

A) No, the broker is entitled to earn a profit from the services he provides to his client.
B) Yes, the broker has a conflict of interest requiring disclosure and consent.
C) Yes, the broker breached his duty of confidentiality.
D) No, the broker is completely compliant with his fiduciary duties.