The tax schedule is as follows: 20% tax rate for the tax bracket [0-20,000\$] 30% tax rate for the tax bracket [20,001-50,000\$] 40% tax rate for the tax bracket [50,001-100,000\$] 50% tax rate for the tax bracket [100,001-500,000\$] You made 100,000$ last year. What is your marginal tax rate? a. 30% b. 50% c. 40% d. 20%