The units of an item available for sale during the year were as follows: 7 units at $400 per unit 54 units at $460 per unit 63 units at $520 per unit 60 units at $550 per unit Jan.1 Inventory Feb Purchase 19 June 8 Purchase Oct. 7 Purchase There are 46 units of the item in the physical inventory at December 31. The periodic inventory system is used Determine the inventory cost under each of the following methods. a. Determine the inventory cost by the first-in, first-out method. b. Determine the inventory cost by the last-in, first-out method. c. Determine the inventory cost by the average cost method. Do not round intermediate calculation and round final answer to the nearest whole value