Periodic System-Calculating Ending Inventory and Cost of Sales Using Average Cost, FIFO, and LFO Leven Company uses a periodic imventory system- The following information for the first quarter is twailable for the companys merchandise inventory. A phsical inkentory taken on March 31 current year showed 1,800 units avalsble. a. Compute ending inventory and cost of goods sold for the quarterended March 3t using t1) Average cost method, (2) FiFO method. (3) and the Lifo method (1) Averase cost method - Note Use the result ExACTLY as dsplayed abore in the catculations below - Note. Do not use neggive signs with any of your answers