SPA fried chicken In SPA fried chicken customers place orders of the food items they want. The order has the order number and the list of items, their prices and the quantities for each item ordered. The total price to be paid by the customer is also shown on the order. Orders are presented in the queue in first in first out (FIFO) manner. An array is used to implement the solution. a) Write down all classes ADTs required to implement the solution. [7] b) Implement the following methods. Ensure that both AddNew and Remove methods run at O(1) i) AddNew() the method must add a new order in the queue.[6] ii) Remove() the method removes the order from the queue.[6] iii) Display() The method displays the orders starting with the last order to join the queue. All details of each order are displayed.