Concord sells a snowboard, EZslide, that is popular with snowboard enthusiasts. The following is information relating to Concord's beginning Inventory and purchases of EZslide snowboards during September. During the same month, 102 EZslide snowboards were sold. Concord uses a periodic inventory system. Date Sept. 1 Explanation Units Unit Cost Total Cost Inventory 13 $116 $1,508 Sept. 12 Purchases 43 119 5.117 Sept. 19 Purchases 50 120 6,000 Sept. 26 Purchases 21 121 2.541 Totals 127 $15,166 Compute the ending inventory at September 30 and the cost of goods sold using the FIFO, LIFO, and average-cost methods. (Round per unit cost to 3 decimal places, eg 15.647 and final answers to O decimal places, eg. 5,125) The ending inventory at September 30 Cost of goods sold FIFO LIFO Average cost