Draw collaboration diagram for depict how the system calculates the charges when a DVD is returned.

(a) You can assume that the objects needed to create DVDVendor (for example, TransactionDB)

already exist.

(b) Make sure your diagram clearly shows which objects are created when calculating charges in the return transaction.

(c) The order in which objects are created or invoked is important.

(d) Objects that you must include are i. DVDVendor, ii. PaymentCollector, iii. TransactionDB, iv. CheckOutCart, v. ReturnTransaction, and vi. BarCode.

(e) You can include other objects if you need them to show the return transactions.

(f) You can assume a simple sensible method for the calculateCharges.