Upon discovering that a salesperson in his office was receiving a referral fee from a local lender for every real estate loan the salesperson referred to the lender, the broker of record in that office took only two actions: He discharged the salesperson, and he warned all other salespersons in the office never to accept such fees. Based only on the foregoing, which of the following is most nearly correct:

A: The salesperson appears to be guilty of co-mingling;
B: While the canons of business ethics may have been bent, no cause for action by the Commissioner exists;
C: Since the broker was apparently unaware of the practice, only the salesperson can be disciplined;
D: Both broker and salesperson may be subject to disciplinary action by the Commissioner.

Answer: D: Both broker and salesperson may be subject to disciplinary action by the Commissioner.