Sage Hill sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Sage Hill's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Sage Hill uses a periodic inventory system Date Units Unit Cost Total Cost Explanation Inventory Sept. 1 15 $88 $ 1.320 12 Purchase 45 90 4,050 19 Purchase 50 92 4,600 26 Purchase 20 93 1,860 Total 130 $11,830 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. 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 $ $