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 Activities Mar. 1 Beginning inventory Mar. 5 Purchase Mar. 9 Sales Units Acquired at Cost Units Sold at Retail 170 units $52.40 per unit 260 units $57.40 per unit 330 units $87.40 per unit Mar. 18 Purchase Mar.25 Purchase Mar.29 Sales 120 units @ $62.40 per 'unit 220 units $64.40 per 'unit Totals 770 units 200 units 530 units @ $97.40 per unit 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the March 9 sale consisted of 100 units from beginning inventory and 230 units from the March 5 purchase; the March 29 sale consisted of 80 units from the March 18 purchase and 120 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 | Avg. Cost | Spec. ID Sales Less: Cost of goods sold Gross profit