Of the Following,who Is Not an Agent in the Eyes

Of the following,who is not an agent in the eyes of the law?

A) the cashier at London Drugs
B) an editor for the Gazette who writes some of the articles and proofreads the final draft of the paper
C) the paperboy who sells subscriptions for the Globe and Mail
D) a real estate salesman working for Royal LePage
E) a computer programmer hired by a real estate agency to help computerize the office by buying appropriate software and hardware for the company and adapting the programs to fit the agency's needs