QUESTION Read the narrative below and Identify the four (4) Data Flow Diagram (FD) elements in the following narrative: 9a) An inventory request is received by the purchasing department. Within the system, a purchase order is prepared and sent to the appropriate vendor. - I U X2 x? ABC 59 9b) Marks a Alan buys a new bicycle at a local shop and pays with his debit card. After confirming the payment, the sales clerk enters the transaction into the cash register and updates the sales file. He then prints the sales receipt and gives it to Alan. At the time of closing, the sales clerk gives the cash to his manager. A B I u X2 x iii ABC TIL Til BE