Current Attempt in Progress Monty sells a snowboard, EZslide, that is popular with snowboard enthusiasts. The following is information relating to Monty's purchases of EZslide snowboards during September. During the same month, 100 EZslide snowboards were sold. Monty uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 11 $93 $1,023 Sept. 12 Purchases 45 96 4,320 Sept. 19 Purchases 50 97 4,850 Sept. 26 Purchases 21 98 2,058 Totals 127 $12,251 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.) The ending inventory at September 30 Cost of goods sold FIFO LIFO LA Average-cost