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 for March Activities Units Sold at Retail Units Acquired at Cost 100 units $51.00 per unit 225 units $56.00 per unit Date Mar. 1 Beginning inventory Mar. 5 Purchase Mar 9 Sales Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales 260 units $86.00 per unit 85 units$61.00 per unit 150 units $63.00 per unit 130 units $96.00 per unit 390 units Totals 560 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 65 units from beginning inventory and 195 units from the March 5 purchase; the March 29 sale consisted of 45 units from the March 18 purchase and 85 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) Gross Margin Sales Less: Cost of goods sold Gross profit FIFO LIFO Avg. Cost Spec. ID