Burt, the CFO of Amber, Inc., was granted incentive stock options in 2009. Burt exercised the options

Question:

Burt, the CFO of Amber, Inc., was granted incentive stock options in 2009. Burt exercised the options in February 2013, when the exercise price was $75,000 and the fair market value of the stock was $90,000. Burt sold the stock in September 2016 for $150,000. What are the regular income tax and AMT consequences for Burt in:
a. 2009?
b. 2013?
c. 2016?