Required information Problem 6-1A Perpetual: Alternative cost flows LO P1 [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 Mar. 18 Purchase Mar. 25 Purchase Mar. 29 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 Totals 980 units Units Sold at Retail 400 units @ $88.80 per unit 270 units @ $98.80 per unit 670 units Problem 6-1A Part 4 4. Compute gross profit earned by the company for each of the four costing methods. For specific identification, the Marc sale consisted of 135 units from beginning inventory and 265 units from the March 5 purchase: the March 29 sale consist