please help and please show all calculations/explanations

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 1,980 Unit Cost $6 Inventory, December 31, prior year For the current year: Purchase, March 21 Purchase, August 1 Inventory, December 31, current year 5,060 2,970 4,010 5,060 8 Required: Compute ending inventory and cost of goods sold for the current year under FIFO, LIFO, and average cost inventory costing methods. (Round "Average cost per unit" to 2 decimal places and final answers to nearest whole dollar amount.) Answer is not complete. Average Cost FIFO 35,050 LIFO 33,880 X $ $ Ending inventory Cost of goods sold