Attorney对应下列哪个选项？

A.A person authorized to act on another’s behalf esp lawyer

B.a body of laws and legal concepts which come down from old Roman laws established by Emperor Justinian

C.the party who initiates a lawsuit by filing a complaint with the clerk of the court against the defendant（s） demanding damages， performance and/or court determination of rights.

D.the party sued in a civil lawsuit or the party charged with a crime in a criminal prosecution.In some types of cases（such as divorce） a defendant may be called a respondent.

正确答案：A person authorized to act on another’s behalf esp lawyer