a Larkspur sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Larkspur's purchases of EZslide snowboards during September. During the same month 105 EZslide snowboards were sold. Larkspur uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept 1 Inventory 15 $ 104 $ 1.560 12 Purchase 106 4.770 19 Purchase 50 108 5,400 26 Purchase 20 109 2.180 Total 130 $ 13,910 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 5 $ $ Compute the ending inventory at September 30 using the FIFO, LIFO and averape-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