! 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. Units Sold at Retail Units Acquired at Cost 240 units @ $53.80 per unit 295 units @ $58.80 per unit Date March 1 March 5 March 9 March 18 March 25 March 29 Activities Beginning inventory Purchase Sales Purchase Purchase Sales 400 units @ $88.80 per unit 155 units 290 units @ $63.80 per unit @ $65.80 per unit 270 units @ $98.80 per unit 670 units Totals 980 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 135 units from beginning inventory, 265 units from the March 5 purchase, 115 units from the March 18 purchase, and 155 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