Broker Greg has a listing for an office building. Salesperson Gary who works for Greg wants to buy the building as an investment. What statement is true? A) Gary should have his brother buy the building. B) He must inform the seller in writing that he has a license before he makes an offer. C) Gary needs to apply to the Department for a waiver before he can purchase the building. D) He cant buy the building unless the listing goes to another broker?