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 Nnit Cost Total Cost Sept 1 Inventory 15 $104 $1,560 12 Purchase 45 106 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 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO Ending inventory at September 30 Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. FIFO Cost of goods sold $ LIFO AVERAGE-COST AVERAGE-COST