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. Date March 1 March 5 Activities Beginning inventory Purchase March 9 March 18 Sales March 25 March 29 Purchase Purchase Sales Totals Units Acquired at Cost 250 units @ $54.00 per unit 300 units @ $59.00 per unit Units Sold at Retail 410 units @ $89.00 per unit 160 units @ $64.00 per unit 300 units @ $66.00 per unit 1,010 units 280 units @ $99.00 per unit 690 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 140 units from beginning inventory, 270 units from the March 5 purchase, 120 units from the March 18 purchase, and 160 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 Weighted Average Specific ID