Xiong Co. uses a periodic inventory system. Its records show the following for the month of May, in which 117 units were sold Units Unit Cost Total Cost May 1 Inventory 15 Purchases 24 Purchases 54 45 63 162 $540 585 882 $2,007 $10 13 Totals Compute the ending inventory at May 31 and cost of goods sold using the FIFO and LIFO methods FIFO LIFO Ending inventory at May 31 Cost of goods sold