The following are data available for Blue Grass for the month of June: Beginning inventory Purchases, in chronological order 600 units @ $8.00 1,200 @ $8.40 units 800 units @ $8.80 1,000 @ $9.00 units Total Available for Sale 3,600 units Sales 2,400 units Required: Calculate cost of goods sold and ending inventory under the following cost flow assumptions (using a periodic inventory system). Show your work. Cost of Goods Sold Ending Inventory 1. Weighted Average 2. FIFO 3. LIFO