Terry is a worker in a country named Pretoria, His salary is $46,000, and his taxable income is $52,000. Pretoria imposes a worker tax as follows: Employers withhold a tax of 20% of all wages and salaries. If taxable income as reported on the employee's income tax return is greater than $50,000, an additional 10% tax is withheld on all income. Terry's marginal tax rate is: 20% 30%. OOO 0% 10%