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Inventory Costing Methods-Periodic Method Spangler Company is a retailer that uses the periodic inventory system. On March 1, it had 100 units of product M at a total cost of $1, 590. On March 6, Spangler purchased 200 units of M for $3, 600. On March 10, it purchased 125 units of M for $3, 000. On March 15, it sold 180 units of M for $5, 400. Calculate the March cost of goods sold and the ending inventory at March 31 using (a) first-in, first-out, (b) last-in, first-out, and (c) the weighted- average cost method. Round your final answers to the nearest dollar