Assume that on January 1, Year 1, XYZ Corp issued 1,000 nonqualified stock options with an estimated value of $4.40 per option. Each option entitles the owner to purchase one share of XYZ stock at $14 a share. The options vest 25% a year (on December 31) for four years (beginning with year 1). All 500 stock options that had vested to that point were excercised in Year 3 when the XYZ stock was valued at $19 per share. No other options were excercised in year 3 or 4. What is the boo-tax difference associated with the stock options in Year 3.