Write a program that considers a class that keeps track of the sales of an item. An object of this class will have the following attributes:
Number sold
Total sales
Total discounts
Cost per item
Bulk quantity
Bulk discount percentage
And, the following methods:
registerSale(n) records the sale of n items. If n is larger than the bulk quantity, the cost per item will be reduced by the bulk discount.
displaySales displays the number sold, the total sales, and total discount