Indigo Corporation sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Indigo Corporation's purchases of EZslide snowboards during September. During the same month, 109 EZslide snowboards were sold. Indigo Corporation uses a periodic inventory system. Date Sept. 1 Sept. 12 Sept. 19 Sept. 26 Explanation Inventory Purchases Purchases Purchases Totals Units 12 50 57 21 140 Unit Cost $105 108 109 110 Total Cost $ 1,260 5,400 6,213 2,310 $15,183 (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, e.g. 125.153 and final answers to 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 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST Cost of goods sold $ $ $ $