Wildhorse Co. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Wildhorse Co's purchases of EZslide snowboards during September. During the same month, 107 EZslide snowboards were sold. Wildhorse Co. uses a periodic inventory system. Date Total Cost Units 15 Unit Cost $110 Explanation Inventory Purchases Purchases 49 Sept. 1 Sept. 12 Sept. 19 Sept. 26 113 51 114 $ 1,650 5,537 5,814 2,875 $15,876 Purchases 25 115 Totals 140 (a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST The ending inventory at September 30 $ $ $ (b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to decimal places, e.g. 125.153 and final answers to 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST Cost of goods sold $ $ $