A company purchased 500 units for $30 each on January 31, It purchased 550 units for $33 each on February 28, It sold a total of 650 units for $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.) $13,200 $10,200 $12,000 $1,800