Consider a class that keeps track of the sales of an item. An object of thisclass will have the attributes• Number sold• Total sales• Total discounts• Cost per item• Bulk quantity• Bulk discount percentageand the following methods:• registerSale(n) records the sale of n items. If n is larger than the bulkquantity, the cost per item will be reduced by the bulk discount.• displaySales displays the number sold, the total sales, and totaldiscount.a. Implement the class in Java.b. Write some Java statements that test the class.

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