Jan. 1 Inventory 6 units at $41 $246 Aug. 13 Purchase 6 units at $42 252 Nov. 30 Purchase 11 units at $44 484 Available for sale 23 units $982 There are 7 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). a. First-i