Periodic inventory by three methods; cost of goods sold The units of an Item available for sale during the year were as follows: lan 1 ltiventory 180 units at sios Mar. 10 Purchase 224 units at $110 30 Purchase 200 units at $116 Dec. 12 Purchase 196 units at $120 There are 200 units of the item in the physical inventory at December 31. The periodic Inventory system is used Determine the ending inventory cost and the cout of goods sold by three methods Cost of Inventory and Cost of Goods Sold Inventory Method Ending Inventory Cost of Goods Sold First-infrut (FIFO) Lasti, t-out (FO) weighted age cost