Sheffield sells a snowboard, EZslide, that is popular with snowboard enthusiasts. The following is information relating to Sheffield's beginning inventory and purchases of EZslide snowboards during September. During the same month, 97 EZslide snowboards were sold. Sheffield uses a periodic inventory system. Date Unit Cost Total Cost Units 12 $92 Explanation Inventory Purchases Purchases Purchases 43 Sept. 1 Sept. 12 Sept. 19 Sept. 26 95 $ 1,104 4,085 4,800 1,843 50 96 19 97 Totals 124 $11,832 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, e.g. 15.647 and final answers to O decimal places, e.g. 5,125.) FIFO LIFO Average-cost The ending inventory at September 30 $ $ $ Cost of goods sold $ $