Blue Spruce Corp. sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Blue Spruce Corp.'s purchases of EZslide snowboards during September. During the same month, 108 EZslide snowboards were sold. Blue Spruce Corp. uses a periodic inventory system. Units 11 Unit Cost $116 Date Sept. 1 Sept. 12 Sept. 19 Sept. 26 48 Explanation Inventory Purchases Purchases Purchases Totals Total Cost $ 1,276 5,712 7,200 2,541 $16,729 119 120 121 60 21 140 (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 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 0 decimal places, e.g. 125.) FIFO LIFO AVERAGE-COST Cost of goods sold $ $