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: Units Unit Cost Inventory, December 31, prior year 2,940 $ 10 For the current year: Purchase, April 11 8,950 11 Purchase, June 1 7,950 16 Sales ($50 each) 10,810 Operating expenses (excluding income tax expense) $ 185,500 Required: 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.