Given the following specification of a front operation for queue:

ItemType Front Function: Returns a copy of the front item on the queue.

Precondition: Queue is not empty.

Postcondition: Queue is not changed.

a. Write this operation as client code, using operations from the QueType class. (Remember, the client code has no access to the private variables of the class).

b. Write this function as a new member function of the QueType class.