On January 2, year 4, Farm Co. granted an employee an option to purchase 1,000 shares of Farm's common stock at $40 per share. The option became exercisable on December 31, year 4, after the employee had completed one year of service, and was exercised on that date. The market prices of Farm's stock were as follows: January 2, year 4: $50 December 31, year 4: $65 Farm uses the intrinsic method of accounting for stock option plans. What amount should Farm recognize as compensation expense for year 4