Dietz Corporation repurchased 2,500 shares of its outstanding $2 par value common stock for $12 per share on February 1. Later that year, Dietz sold 1,750 shares of the treasury stock for $10 per share. What is the balance in Treasury Stock on December 31 of that year?

a.$7,500

b.$17,500

c.$9,000

d.$12,500