Givoly Incorporated uses a periodic inventory system. At the end of the annual accounting period, December 31 of the current year, the accounting records provided the following information for product 2: Inventory, December 31, prior year For the current year: Purchase, March 5 Purchase, September 19 Sale ($25 each) Sale ($33 each) Operating expenses (excluding income tax expense) Required: Units 6,000 Unit Cost $ 10 18,000 8 9,000 4 8,800 15,000 $ 390,000 1. Prepare a separate income statement through pretax income that details cost of goods sold for (a) Case A: FIFO and (b) Case B: LIFO. 2. Compute the difference between the pretax income and the ending inventory amounts for the two cases. 3. Which inventory costing method may be preferred for income tax purposes?