Emily Company 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, April 11 Purchase, June 1 Sales ($54 each) Operating expenses (excluding income tax expense) Required: Units 2,860 Unit Cost $ 11 8,870 12 7,860 17 10,930 $ 191,000 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 amount for the two cases. 3. Which inventory costing method may be preferred for income tax purposes?