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 230 units @ $53.60 per unit 290 units @ $58.60 per unit Date March 1 March 5 March 9 March 18 March 25 March 29 390 units @ $88.60 per unit Activities Beginning inventory Purchase Sales Purchase Purchase Sales Totals 150 units @ $63.60 per unit 280 units @ $65.60 per unit 260 units @ $98.60 per unit 650 units 950 units 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, units sold include 130 units from beginning inventory, 260 units from the March 5 purchase, 110 units from the March 18 purchase, and 150 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 37,590 39,410 38,354 39,040 Less: Cost of goods sold Gross profit