Henrich is a single taxpayer. In $2023,$ his taxable income is $$536,000.$ What are his income tax and net investment income tax liability in each of the following alternative scenarios? Use Tax Rate Schedule, Dividends and Capital Gains Tax Rates for reference.

a$.$ All of his income is salary from his employer. Assume his modified AGI is $$570,000.$

b$.$ His $$536,000$ of taxable income includes $$2,000$ of long$-$term capital gain that is taxed at preferential rates. Assume his modified AGI is $$570,000.$

c$.$ His $$536,000$ of taxable income includes $$51,000$ of long$-$term capital gain that is taxed at preferential rates. Assume his modified AGI is $$570,000.$

d$.$ Henrich has $$198,000$ of taxable income, which includes $$51,200$ of long$-$term capital gain that is taxed at preferential rates. Assume his modified AGI is $$216,000.$