g Methods-Periodic Method The following data are for the Graham Corporation, which sells just one product: Beginning Inventory, January 1 1,200 Purchases:February 11 1,500 Units Unit Cost $20 $21 May 18 October 23 March 1 July 1 October 29 1,40022 1,100 1,400 1,400 1,000 24 Sales: Calculate the value of ending inventory and cost of goods sold at year-end using the periodic m and (a) first-in. first-out, (b) last-in, first-out. and (C) weighted-average cost method Hint: For weighted-average cost, round the cost per unit to 3 decimal places and round your final answers to the nearest dollar. a. First-in, First-out: Ending Inventory Cost of goods sold S