Spencer, a fraud examiner, plans to use a confidential informant. The informant agrees to aid Spencer in exchange for cash. Spencer prepares a receipt for the transfer of cash to the informant and asks the informant to sign it, but the informant refuses. What should Spencer do? None of these answers are correct.,Have a witness observe the transfer of cash and sign a statement attesting to the transaction.,Give the informant the cash, but make no record of the transaction