eBook Show Me How Calculator Print Item Periodic Inventory by Three Methods The units of an item available for sale during the year were as follows: Jan. 1 Inventory 1,070 u 1,390 units $137 1,500 units$139 1,140 units@$140 Feb. 17 Purchase Jul. 21 Purchase Nov. 23 Purchase There are 1,215 units of the item in the physical inventory at December 31. The periodic inventory system is used. Do not round intermediat calculation and round final answer to nearest whole value. a. Determine the inventory cost by the first-in, first-out method. 170,100x b. Determine the inventory cost by the last-in, first-out method 165,240 X c. Determine the inventory cost by the weighted average cost method 167,729.X