D. What is a procurement card? In what business environment is its use most useful? What special controls on the cards are necessary to make the procedure work?

E. Compare internal control issues between the invoice approval and payment process in a manual office with that of an automated office where all departments are connected to the same AIS. Is an ink pen signature more desirable than a digital approval? Why or why not?

F. What internal control issues are there with the payment function in accounts payable?