Periodic Inventory Using FIFO, LIFO, and Weighted Average Cost Methods The units of an item available for sale during the year were as follows: Jan. 1 Aug. 13 Inventory 9 units at $25 $225 Purchase: 16 units at $26 416 Nov. 30 Purchase 20 units at $28 560 Available for sale 45 units $1,201 There are 18 units of the item in the physical inventory at December 31. The periodic inventory system is used. Determine the inventory cost using the (a) first-in, first-out (FIFO) method; (b) last- in, first-out (LIFO) method; and (e) weighted average cost method (round per-unit cost to two decimal places and your final answer to the nearest whole dollar). a. First-in, first-out (FIFO) b. Last-in, first-out (LIFO) c. Weighted average cost