When an auditor suspects that an unnamed employee is submitting and approving bills for payment, which of the following processes would be most useful in supplying additional proof? Select your answer A Use generalist audit software to find vendor bills containing post office box numbers or other strange details. Choose a representative sample of those invoices and link them to any supporting documentation, such as receiving reports B Choose a sample of the payments made throughout the year and examine each to see if it is acceptable C Select a sample of invoices paid during the past month and trace them to appropriate vendor D Trace a sample of receiving reports to the authorized payment for the period that is the subject of the investigation. Note any elements that weren't handled properly 