Periodic Inventory by Three Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 1,025 units @ $120 Feb. 17 Purchase 1,420 units @ $121 July 21 Purchase 1,510 units @ $122 Nov. 23 Purchase 1,125 units @ $123 There are 1,200 units of the item in the physical inventory at December 31. The periodic inventory system is used. 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 weighted average cost method. Do not round intermediate calculation and round final answer to the nearest whole dollar