Despite obtaining an extension to file his tax return, Albert Einstein filed his 2023 tax return late on November 27, 2024. He paid the tax due at this time as well. His return showed a taxable income of $175,235. His filing status is head of household.

A.) Calculate his 2023 federal income tax liability.

B.) He had federal taxes withheld during 2023 of $10,000. Identify what penalties he owes, if any, and how much each penalty would be.

C.) What is his marginal tax rate?