Kingbird, Inc. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Kingbird, Inc's purchases of EZslide snowboards during September. During the same month, 110 EZslide snowboards were sold. Kingbird, Inc. uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 11 $110 $ 1,210 5,989 Sept. 12 Purchases 113 Sept. 19 Purchases 6,270 Sept. 26 Purchases 2,875 Totals $ 16,344 (a) Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, eg. 125.153 and final answers to O decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST The ending inventory at September 30 (b) Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. (Round average cost per unit to 3 decimal places, e.g. 125.153 and final answers to O decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST Cost of goods sold $