Periodic inventory using FFO, UFO, and welghted average cost methods The units of an item avallable for sale during the year were as follows: There are 17 units of the item in the physical inventory at December 31 . The periodic inventory system is used. Determine the inventory cost using the (o) first-in, first-out (FIFO) method; (b) last-in, first-out (UFO) method; and (c) weighted average cost method (round per-unit cost to two decimal places and your final answer to the nearest whole dollar)