A company purchased 400 units for $20 each on January 31. It purchased 520 units for $26 each on February 28. It sold a total of 560 units for $40 each from March 1 through December 31. What is the amount 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.)

$9,360

$4,960

$7,200

$2,240