Which of the Following Is True of the Duty of Agents

Which of the following is true of the duty of agents to the principal?

A) The duty not to use or disclose confidential information terminates after the agency ends.
B) When conducting the principal's business,an agent can deal with himself.
C) Except for compensation,an agent should not profit from acting on behalf of the principal.
D) A gratuitous agent does not have the same fiduciary duty as a paid agent.