Splish Brothers Inc, sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is Information relating to Splish Brothers Inc's purchases of EZslide snowboards during September During the same month, 109 EZslide snowboards were sold. Splish Brothers Inc. uses a periodic Inventory system Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory $119 $1,309 Sept. 12 Purchases 11 50 58 122 6,100 Sept. 19 Purchases 7,134 123 Sept. 26 Purchases 2,852 124 Totals 142 $17,395 (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, s. 125.153 and final answers to decimal places 125) AVERAGE-COST LIFO FIFO $ The ending Inventory at September 30 del 125. Sandra Compute the cost of goods sold at September 30 using the FIFO, LIFO and average cost methods. Round average cost per un to decimal places 1250 LIFO AVERAGE-COST FIFO Cost of goods sold 5