A. A written instrument appointing and authorizing a person to act in the place of another agent or substitute.
B. The chief law officer of the federal government or of each state government.
C. The attorney named in the records or file of a case who bears the responsibility for the handling of the case on behalf of the party he or she represents.
D. Privilege that confidential communications between an attorney and a client in the course of the professional relationship cannot be disclosed without the consent of the client.
【答案与解析】
答案是A。