Periodic inventory using FIFO, LIFO, and weighted average cost methods The units of an item available for sale during the year were as follows: Date Line Item Description Units Cost per Unit Amount Jan. 1 Inventory 15 units at $34 $510 Aug. 13 Purchase 12 units at $35 420 Nov. 30 Purchase 8 units at $37 296 Available for sale 35 units $1,226 There are 21 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 (c) weighted average cost method (round per-unit cost to two decimal places and your final answer to the nearest whole dollar). Line Item Description Amount a. First-in, first-out (FIFO) method $fill in the blank 1 b. Last-in, first-out (LIFO) method $fill in the blank 2 c. Weighted average cost method $fill in the blank 3