Inventory by. Three Methods The units of an item available for sale during the year were as follows: There are 47 units of the item in the physical inventory at December 31. The periodic ieventory system is used. Determine the inventory cost under each of the following methods. a. Determine the inventory cost by using the firsting, firstyout method. b. Determine the inventory cost by using the tast-in, first-out methed. Determine the inventory cost by using the weighted average cost method. Round intermediate calculation to cents then round final answer to the nearest whole deltar