Which of the Following Is Correct

Multiple Choice

Which of the following is correct?

A) If your income is $20,000 and you are paying $2,000 in taxes, your marginal tax rate is 10 percent.
B) If your income is $20,000 and you are paying $2,000 in income taxes, the income tax you are paying is progressive.
C) If you paid $0.39 as tax from an additional dollar you earned, your marginal tax rate is 39 percent.
D) If your marginal tax rate falls as your income increases, the tax is progressive.
E) If your income is $20,000 and you are paying $2,000 in income taxes, the income tax you are paying is proportional.