roberts company adopts a compensatory stock option plan and grants 40 executivers 1,000 shares each at $30 per share. The fair value per option is $7 on the grant date. the company estimates that its annual employee tornover rate during the services period of three years will be 4% per year. At the end of 2021, the company estimates that the employee turnover will be 5% per year for the entire services period. The compensation expense for 2021 (rounded to the nearest dollar) will be :

1. 80,022
2. 82575
3. 160043
4. 77648