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Required information [The following information applies to the questions displayed below.] Warnerwoods Company uses a perpetual inventory system. It entered into the following purchases and sales transactions Mar. 25 for March. Date Activities Beginning inventory Pu rchase Sa les Pu rchase Purchase Sales Totals Units Acquired at Mar. Mar. Mar. Mar. Mar. 5 9 18 29 lee 120 200 820 units @ $5 per units @ $55 per units @ $60 per units @ $62 per units Cost unit unit unit unit Units Sold at Retail 42e units @ $85 per unit 16e units @ $95 per unit 580 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 80 units from beginning inventory and 340 units from the March 5 purchase; the March 29 sale consisted of 40 units from the March 18 purchase and 120 units from the March 25 purchase. (Round weighted average cost per unit to 2 decimal places.) ss M in Sales Less: Cost of goods sold Gross profit FIFO LIFO A . Cost S ec.lD