Kingbird sells a snowboard, Ezslide, that is popular with snowboard enthusiasts. Below is information relating to Kingbird's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Kingbird uses a periodic inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $ 102 $1,530 12 Purchase 45 104 4,680 19 Purchase 50 106 5,300 26 Purchase 20 107 2,140 Total 130 $ 13,650 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 $ GA