Because of an Alarming Drop in the Earnings of Microminds

Because of an alarming drop in the earnings of Microminds Ltd., Roger, the principal contract negotiator and president of the software development company, called a meeting to discuss productivity and customer satisfaction. At the meeting were Michael, troubleshooter, who helped customers over the phone who needed guidance in using the company's software; Ralph, receptionist and purchaser of the office supplies for the company; Keith and Jason, salesmen, hired on a commission basis, i.e., not as employees but as independent contractors; Mr. Toman, purchasing agent for the Vancouver School Board, an important customer; and Mr. Rice, purchasing agent for Matol Toys Ltd., also a customer. Which of these is an agent?

A) All of them except Michael
B) Roger, Toman, and Rice only
C) All of them except Keith and Jason
D) Only Roger
E) All of them