3. Given the following Quantity Discount Schedule Discount Number 1 2 3 4 Discount quantity 0 to 199 200 to 499 500 to 999 1000 or more Discount % 0 3 4% 4.5% Discount cost ($) 55 To be completed To be completed To be completed If the normal cost per unit is $55, the ordering cost per order is $82; the annual demand is 4000 units, and the holding cost is 55% of the cost per unit. What order quantity will minimize the total inventory cost? Please show all work. Please show you calculations manually