Everyone in the office noticed what a dedicated employee Carley is she never even takes a vacation. Caley is in charge of the petty cash fund. She transfers funds from the companys account yo the bank account on a need basis. During a srprise audit, the petty cash fund was found to contain fictitious receipts. Over a three year period , Caley had used more than$ 4000 of petty cash to pay for personal expense. What internal control procedures that would have prevented this?