Nittany 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 1: Units Unit Cost Inventory, December 31, prior year 2,000 $5 For the current year: Purchase, March 21 5,000 6 Purchase, August 1 3,000 8 Inventory, December 31, current year Required: 4,000 Compute ending inventory and cost of goods sold for the current year under FIFO, LIFO, and average cost inventory costing methods. Ending inventory Cost of goods sold FIFO LIFO Average Cost