Splish Brothers sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Splish Brothers's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Splish Brothers uses a periodic inventory system. Date Explanation Units Unit Cost Total Cost Sept. 1 Inventory 15 $94 $1,410 12 Purchase 45 96 4,320 19 Purchase 50 98 4,900 26 Purchase 20 99 1,980 120 Total 130 $12,610 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September 30 $ $ $ Compute the cost of goods sold at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST Cost of goods sold $ ta $ $