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. Ending inventory at September $ 30 FIFO $ LIFO 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