Please answer all parts and show work, thanks

19. Colleen is a cash basis, calendar year individual taxpayer who has a filing status of "single". Colleen's taxable income for 2019 is $195,000. Colleen's total tax prepayments for 2019 are-$52,000. Colleen has no tax credits and owes no other taxes that are filed on the form 1040. Using the tax table below: Single Taxable income (Form 1040 Line 10 Tax Rate in 2019 $82,501 $157,500 $14.089.50 plus 24% of the amount over $82,500 $157,501$200,000 $32.089.50 plus 32% of the amount over $157,500 (a) Determine Colleen's "gross tax liability for 2019? (b) Determine Colleen's "additional tax due or net tax refund" for 2019? (c) What is Colleen's "marginal tax rate" for 2019? (d) What is Colleen's "effective tax rate" for 2019