The management of Gresa Inc. is reevaluating the appropriateness of using its present inventory cost flow method, which is average-cost. The company requests your help in determining the results of operations for 2017 if either the FIFO or the LIFO method had been used. For 2017, the accounting records show these data: Inventories Purchases and Sales Total net sales (238,000 units) Total cost of goods purchased (250,000 units) $10,000 Beginning (5,000 units) Ending (17,000 units) $1,190,000 571,500 Purchases were made quarterly as follows Quarter Units Unit Cost Total Cost $2.10$136,500 121,000 126,500 2.50 187300 65,000 55,000 55,000 75,000 250,000 2.20 2.30 2 4 187,500 $571,500 Operating expenses were $100,000, and the company's income tax rate is 40%