[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. Date March 1 March 5 Activities Beginning inventory Purchase Units Acquired at Cost 200 units @ $53.00 per unit 275 units @ $58.00 per unit Units Sold at Retail March 9 Sales 360 units @ $88.00 per unit March 18 Purchase March 25 March 29 Purchase Sales 135 units @$63.00 per unit 250 units $65.00 per unit Totals 860 units 230 units @ $98.00 per unit 590 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold Include 115 units from beginning inventory, 245 units from the March 5 purchase, 95 units from the March 18 purchase, and 135 units from the March 25 purchase. (Round weighted average cost per unit to two decimals and final answers to nearest whole dollar.) Gross Margin FIFO LIFO Weighted Average Specific ID Sales Less: Cost of goods sold Gross profit