Ed's Wife Diane Owns a Printing Business in Town

Essay

Ed's wife Diane owns a printing business in town.Ed works in the accounts payable department of Jiffy Abs Vitamin Company.Diane prints invoices for work supposedly done for Jiffy Abs (no actual work was performed),and Ed places the invoice in the invoice pile approved for payment.Jiffy Abs pays these invoices and sends Diane a check.
a.Name two internal controls that might prevent or detect these fraudulent payments.
b.Name two audit procedures that might detect this fraud