Skysong sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Skysong's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Skysong uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $92 $ 1,380 12 Purchase 45 94 4,230 19 Purchase 50 96 4.800 26 Purchase 20 97 1,940 Total 130 $ 12,350 Compute the ending inventory at September 30 using the FIFO, LIFO and average cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 $ $ oy 26 Purchase 20 97 1.940 Total 130 $ 12,350 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 $