The following transactions occurred for the month: 90,000 units were sold for $20 each. Units Cost Total Beginning Balance 15,000 Purchase 1 20,000 $10 Purchase 2 27,000 $12 Purchase 3 38,000 $16 Weighted Average Unit Cost: Calculate the Cost of Goods Sold, Ending inventory, and Gross Profit for the month under FIFO, LIFO, and Weighted Average. FIFO: Sales $ Less: Cost of Goods Sold $ Gross Profit $ Ending Inventory $