Inventory Costing Methods-Perpetual Method Using the data below, assume that Graham Corporation uses the perpetual inventory system. Calculate the value of ending inventory and cost of goods sold for the year using the perpetual method and (a) first-in, first-out, (b) last-in, first-out, and (c) weighted-average cost method. Round the cost per unit to 3 decimal places and round your final answers to the nearest dollar