A broker entered into a listing contract with the seller of a house and became the single agent of the seller. A potential buyer wants to see the seller's house and wishes to have representation by the broker as well. The broker must disclose in writing to a buyer that the licensee is an agent of seller. have the seller sign a Transition to Transaction Broker form before showing the house to the buyer. deliver a copy of the Agency Disclosure Form to the seller. get the informed, written consent of all parties prior to becoming a dual agent. A B. C. D.