Metlock sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Metlock's purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold. Metlock uses a periodic inventory system. Minit Cost Date Sept. 1 12 19 26 Explanation Inventory Purchase Purchase Purchase Total Units 15 45 50 20 130 $108 110 112 113 Total Cost $1,620 4,950 5,600 2.260 $14.430 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 $