Which of the Following Statements Is True with Regard to an Agent's

Which of the following statements is true with regard to an agent's duties?

A) A real-estate agent may buy property from a third party if it is at a good price and then sell the property to his principal at a higher price.
B) An agent is not entitled to the agreed-upon commission and reasonable expenses undertaken on behalf of his principal in carrying out his duties.
C) An agent cannot act for two principals even with the knowledge and consent of those principals.
D) An agent must always scrupulously account for moneys coming into her hands on behalf of his principal.
E) An agent need not disclose all relevant information to the principal.