Larkspur sells a snowboard, EZslide, that is popular with snowboard enthusiasts. Below is information relating to Linkpur purchases of EZslide snowboards during September. During the same month, 105 EZslide snowboards were sold Larkspurv periodic inventory system Date Sept. 1 12 19 26 Explanation Inventory Purchase Purchase Purchase Total Units 15 45 50 20 130 Unit Cost $104 106 10B 109 Total Cost $1,560 4.770 5,400 2,180 $13.910 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. AVERAGE-COST LIFO FIFO Cost of goods sold