The AICPA Code of Professional Conduct states that a CPA shall not disclose any confidential information obtained in the course of a professional engagement except with the consent of the client. This rule should be understood to preclude a CPA from responding to an inquiry made by: Given the information above, which of the following is the correct answer? a) The trial board of the AICPA. b) An investigative body of a state CPA society. c) A CPA-shareholder of the client corporation. d) An AICPA voluntary quality review body