9) 9 (1pts) ^ All of the following are requirements of an incentive stock option (ISO) EXCEPT must be part of a written plan approved by the employee's supervisor the option's exercise date cannot exceed 10 years from the date of the grant x the exercise price cannot be less than the market price of the stock on the date of the grant there is an annual limit of $100,000 on the value of the 150 s exercisable during any 1 year for any employee for which the stock is valued on the grant date