Suppose that a recent purchase of a residential home has been facilitated equally by a listing agent and a buyer broker. Based on your understanding of how commissions are determined, which of the following scenarios best describes who would be entitled a commission upon sale of the property? (Note: For simplicity, you can assume the seller did not procure the buyer on his or her own.)

A) neither the listing broker nor the buyer broker

B) only the buyer broker

C) only the listing broker

D) both the listing broker and the buyer broker