The periodic inventory records of Synthetix Prosthetics indicate the following for the month of July Click the icon to view the inventory records.) At July 31, Synthetix counts nine units of inventory on hand. Compute ending merchandise inventory and cost of goods sold for Synthetix using the LIFO inventory costing method. LIFO Cost Ending Merchandise Inventory Cost of Goods Sold Jul., 1 Beginning merchandise inventory 8 Purchase 15 Purchase 26 Purchase 18 units @ $ 55 each 15 units @ $ 60 each 12 units @ $ 61 each 11 units @ $ 62 each