A company initiated a stock option plan for its senior executives on January 1, 20x1. The fair value of the plan at the date of grant was $660,000. The vesting period ends on December 31, 20x3. The unadjusted trial balance as at December 31, 20x2 shows a balance of $286,700 in the Contributed Surplus Stock Options account. At December 31, 20x2, the company estimated that 88% of options would vest. Required Prepare the journal entry to record compensation expense at December 31, 20x2.