Required information [The following information applies to the questions displayed below.] Warnerwoods Company uses a periodic inventory system. It entered into the following purchases and sales transactions for March Units Acquired at Cost 150 units@ $40 per unit 450 units$45 per unit Activities Units Sold at Retail Date Mar Beginning inventory Mar. 5 Purchase Mar. 9 Sales Mar. 18 Purchase Mar. 25 Purchase Mar. 29 Sales 470 units $75 per unit 220 units $50 per unit 300 units $52 per unit 260 units$85 per unit 730 units Totals 1,120 units For specific identification, the March 9 sale consisted of 40 units from beginning inventory and 430 units from the March 5 purchase; the March 29 sale consisted of 90 units from the March 18 purchase and 170 units from the March 25 purchase 4. Compute gross profit earned by the company for each of the four costing methods. (Round your average cost per unit to 2 decimal places and final answers to nearest whole dollar.) Weighted Average Specific Identification LIFO Sales Less: Cost of goods sold Gross proft