On October 15, 2017, the board of directors of Ensor Materials Corporation approved a stock option plan for key executives. On January 1, 2018, 30 million stock options were granted, exercisable for 30 million shares of Ensor's $1 par common stock. The options are exercisable between January 1, 2021, and December 31, 2023, at 80% of the quoted market price on January 1, 2018, which was $25. The fair value of the 30 million options, estimated by an appropriate option pricing model, is $5 per option. Ensor chooses the option to recognize forfeitures only when they occur. Ten percent (3 million) of the options were forfeited when an executive resigned in 2019. All other options were exercised on July 12, 2022, when the stock's price jumped unexpectedly to $29 per share. Required: 1. When is Ensor's stock option measurement date? 2. Determine the compensation expense for the stock option plan in 2018. (Ignore taxes.) 3. & 5. Prepare the necessary journal entries. Answer is complete but not entirely correct. Complete this question by entering your answers in the tabs below. Req 1 and 2 Req 3 and 5 Prepare the necessary journal entries. (If no entry is required for a transaction/event, select "No journal entry required" in the first account field. Enter your answers in millions rounded to 1 decimal place (i.e., 5,500,000 should be entered as 5.5).) No Date General Journal Debit Credit 2019 Compensation expense 40.0 Paid-in capital-stock options 40.0 1 2 2020 45.0 Compensation expense Paid-in capital-stock options 45.0 3 2022 Cash 324.0 135.0 Paid-in capital-stock options Common stock Paid-in capital-excess of par 27.0 432.0