OBJ Exercise 20-6 Ordering and Carrying Costs Ottis, Inc., uses 640,000 plastic housing units each year in its production of paper shredders. The cost of placing an order is $30. The cost of holding one unit of inventory for one year is $15.00. Currently, Ottis places 160 orders of 4,000 plastic housing units per year. C SHO Required: 1. Compute the annual ordering cost. 2. Compute the annual carrying cost. 3. Compute the cost of Ottis's current inventory policy. Is this the minimum cost? Why or why not