Maren received 12 NQOs (each option gives her the right to purchase 12 shares of stock for $7 per share) at the time she started working when the stock price was $8 per share. When the share price was $17 per share, she exercised all of her options. Eighteen months later she sold all of the shares for $22 per share. What is the amount of Maren's bargain element?

a. $0

b. $1,440

c. $1,296

d. $2,448

e. None of the choices are correct