Sara Jones is the owner of a rapidly growing department store and faces stiff competition. The store is using an out-of-date AIS, resulting in poor customer service, late and error-prone billing, and inefficient control and monitoring of inventory. If the store is to continue growing, its AIS must be upgraded. However, the company is not exactly sure what it wants the AIS to accomplish. Sara has heard about prototyping, but she does not know what it is and whether it would help her. What would you tell Sara if she asked you to define and explain prototyping? Include an explanation of the advantages and disadvantages of prototyping and the circumstances in which it would be most appropriate.