Aaron filed his income tax return for the 2018 calendar year on September 10, 2023, and included a check for her unpaid 2018 tax liability of $4,000. His 2018 income tax return correctly showed a tax liability of $4,000. Aaron filed an extension for her 2018 income tax return on March 15, 2019. What combined late filing and late payment penalties would Aaron owe? $1,700$1,900 $2,000 $1,800