Windsor sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Windsor's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Windsor uses a periodic inventory system. Date Units 15 Sept. 1 12 Explanation Inventory Purchase Purchase Unit Cost $122 124 45 Total Cost $1,830 5,580 6,300 2,540 $16,250 19 50 126 26 Purchase 20 127 Total 130 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 $ $ $