A company purchased 200 units for $30 each on January 31. It purchased 240 units for $36 each on February 28. It sold a total of 340 units for $40 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.) O A. $2,440 OB. $3,600 O C. $3,000 O D. $560