On January 1, 2016, Indigo Corporation granted9,300options to key executives. Each option allows the executive to purchase one share of Indigos $5par value common stock at a price of $20per share. The options were exercisable within a 2-year period beginning January 1, 2018, if the grantee is still employed by the company at the time of the exercise. On the grant date, Indigos stock was trading at $26per share, and a fair value option-pricing model determines total compensation to be $425,000.

On May 1, 2018,7,440options were exercised when the market price of Indigos stock was $30per share. The remaining options lapsed in 2020 because executives decided not to exercise their options.

Prepare the necessary journal entries related to the stock option plan for the years 2016 through 2020