Carla Vista Co sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Carla Vista Cos purchases of EZslide snowboards during September. During the same month, 106 EZslide snowboards were sold. Carla Vista Couses a periodic inventory system. Unit Cost $100 Date Sept. 1 Sept. 12 Sept. 19 Sept. 26 Explanation Units Inventory 15 Purchases 42 Purchases 57 Purchases 21 Totals 135 103 104 105 Total Cost $ 1,500 4,326 5.928 2,205 $13.959 (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 decimal places, eg. 125.) FIFO LIFO AVERAGE COST The ending inventory at September 30 (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, es. 125.153 and final answers to decimal places, eg. 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 eg. 125.153 and final answers to decimal places, eg, 125.) FIFO LIFO AVERAGE-COST Cost of goods sold