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 Units Sold at Retail March 1 March 5 Beginning inventory Purchase March 91 Sales March 18 March 25 March 29 Purchase Purchase Sales Units Acquired at Cost 240 units @$53.80 per unit 295 units @$58.80 per unit 155 units @$63.80 per unit 290 units @$65.80 per unit 400 units @$88.80 per unit Totals 980 units 270 units @$98.80 per unit 670 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. Note: 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: $ 670 $ 670 $ 670 $ 670