Orion Iron Corp. tracks the number of units purchased and sold throughout each year but applies its inventory costing method at the end of the year as if it uses a periodic inventory system. Assume its accounting records provided the following information at the end of the annual accounting period, December 31. Required: 1. Calculate the number and cost of goods available for sale. 2. Calculate the number of units in ending inventory. 3. Compute the cost of ending inventory and cost of goods sold under (a) FIFO and (b) weighted average cost. (Round Weighted average cost per unit to two decimal places and final answers to the nearest dollar amount.) 4. Prepare an income statement that shows amounts for the FIFO method in one column and for the weighted average method in another column. Include the following line items in the income statement: Sales, Cost of Goods Sold, Gross Profit, Operating Expe and Income from Operations. (Round Weighted average cost per unit to two decimal places and final answers to the nearest amount.)