Wong's Trading Cards, Inc, had the following purchases in the month of April. Wong's Trading Card Inventorv Purchases On April 30, Wong sells 1,000 units to customers for $20 per unit. What is Wong's Cost of Goods Sold (COGS) using the FIFO method of inventory valuation? What is Wong's COGS using the LIFO method of inventory valuation? What is Wong's COGS using the Weighted Average method of inventory valuation? Round your ending answer to whole number (no cents) What is Wong's Ending Inventory after the sale using the LIFO method of inventory valuation