Final answer:
The compensation expense for 2011 on Reese's books should be $1,200.
Step-by-step explanation:
The fair value of an employee stock option is determined using a fair value option pricing model. In this case, the total compensation expense was determined to be $1,200. This expense needs to be recognized for the service period, which is two years beginning on January 1, 2011.
Jack Buchanan exercised his option on September 1, 2011, and sold his 100 shares on December 1, 2011. The fair value of the stock on September 1 was $48 per share, and on December 1 it was $54 per share.
To calculate the compensation expense for 2011, we need to consider the fair value of the option at the date of grant and the fair value of the stock at the date of exercise. In this case, since Buchanan exercised his option in 2011, we only need to consider the fair value of the stock on September 1, which is $48 per share.
The number of shares that Buchanan exercised is irrelevant for the calculation of compensation expense. Therefore, the compensation expense for 2011 on Reese's books should be $1,200.