Per the Fraud Examiners Manual, why are refund schemes more difficult to perpetrate in many high-tech retail stores? A. the cash registers have anti-fraud controls that prohibit cash sales. B. the cash registers have anti-fraud controls that require only cash sales. C. the cash registers have anti-fraud controls that prohibits the refund to be made to the original credit card. D. the cash registers have anti-fraud controls that require the refund to be made to the original credit card used for the purchase