Helena was granted an ISO on Aug 3, 2017 for 500 shares at $10. She exercised the stock options on Nov 23, 2019 when the market price was $25 per share. What are the tax consequences of the exercise? Check all that apply.

a. She has an AMT item of $15 per share. b. She has no ordinary taxable income at the time of exercise. c. She has ordinary income of $15 per share. d. She has capital gain income of $15 per share.