4. A company purchased 500 units for AED 30 each on January 31. It purchased 550 units for AED 33 each on February 28. It sold a total of 650 units for AED 45 each from March 1 through December 31. What is the cost of ending inventory on December 31 if the company uses the first-in, first-out (FIFO) inventory costing method? (Assume that the company uses a perpetual inventory system.) AED