Prince Corp. owned 80% of Kile Corp.'s common stock. During October 2013, Kile sold merchandise to Prince for $140,000. At December 31, 2013, 50% of this merchandise remained in Prince's inventory. For 2013, gross profit percentages were 30% of sales for Prince and 40% of sales for Kile. The amount of unrealized intra-entity profit in ending inventory at December 31, 2013 that should be eliminated in the consolidation process is

$28,000.

$56,000.

$22,400.

$21,000.

$42,000.