Shamrock sells a snowboard. EZslide, that is popular with snowboard enthusiasts. Below is information relating to Shamrock's purchases of E2slide snowboards during September. During the same month, 105 EZslide snowboards were sold. Shamrock uses a periodic inventory system, Date Explanation Units Total Cost Unit Cost Inventory 15 $112 $1680 Sept. 1 12 Purchase 45 114 5.130 19 Purchase 50 116 5.800 26 Purchase 20 117 2340 Total 130 $14.950 Compute the ending inventory at September 30 using the FIFO, LIFO and average cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 19 Purchase 50 116 5,800 26 Purchase 20 117 2,340 Total 130 $14,950 Compute the ending Inventory at September 30 using the FIFO, LIFO and average cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 $ Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST $ Cost of goods sold $