Current Attempt in Progress 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. Date Sept. 1 12 19 26 Explanation Inventory Purchase Purchase Purchase Total Units 15 45 50 20 130 Unit Cost $86 88 90 91 Total Cost $1,290 3,960 4,500 1,820 $11.570 Compute the ending inventory at September 30 using the FIFO, LIFO and average-cost methods. FIFO LIFO AVERAGE-COST Ending inventory at September S $ 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