Martin,who Wants to Sell His House,authorizes His Concierge,William,to Find a Potential

Martin,who wants to sell his house,authorizes his concierge,William,to find a potential buyer and finalize a deal above a stipulated price.William contracts Chris,a real estate broker,and intends him to only find a potential buyer and send him or her over to William for the sale.Martin then contracts ReNowait Goodhouses,a home improvement company,to renovate the house.ReNowait completes its work and Martin pays it.Chris then searches for a suitable buyer and finds one in George.George buys the house and Chris is paid for his services.In this scenario,what role does Chris perform?

A) independent contractor
B) agent
C) principal
D) trustee