Which of the following activities is not allowed under the Real Estate Settlement and Procedures Act?

A) A broker having any business relationship with an insurance company that is involved in the broker's transaction.
B) A broker pre-qualifying a buyer for a mortgage loan.
C) A lender requiring a deposit from a borrower for a tax and insurance escrow account.
D) A lender paying a fee to a broker for referring a borrower to the lender.