Kilo's Regular Income Tax Before Credits on Her Form 1040

Kilo's regular income tax before credits on her Form 1040 is $450,890, and she has a $5,700 minimum tax credit from a previous year. Which of the following statements is true?

A) If Ms. Kilo's tentative minimum tax is $450,890, her total tax liability is $445,190.
B) If Ms. Kilo's tentative minimum tax is $445,890, her total tax liability is $440,190.
C) If Ms. Kilo's tentative minimum tax is $445,890, her total tax liability is $445,890.
D) Both A. and C. are true.