A buyer-broker loactes a property that is listed with another broker. The buyer makes an offer through the buyer-broker and an agreement of sale results. In this situation, The buyer-broker is acting as a:

a) subagent to the listing broker

b) referring broker with the listing broker

c) representative of the buyer and owes no fiduciary obligations to the seller

d) representative of the seller and owes no fiduciary obligations to the buyer