Periodic Inventory by Three Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 1,030 units $124 Feb, 17 Purchase 1,415 units @ $125 July 21 Purchase 1,500 units @ $127 Nov. 23 Purchase 1,140 units 5129 There are 1,215 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 neares