William and Michelle who are married, have a regular tax liability of $19,080 based on regular taxable income of $125,000. The couple took the standard deduction in arriving at regular taxable income. This year they generated tax preferences of $25,000, and positive adjustments attributable to the exercise of incentive stock options of $30,000. What is William and Michelle's alternative minimum tax for 2020? $4,684 $23.764 $4.885 $4,726