Using Table 19.1, compute the taxable income and taxes for the following taxpayers: Taxpayer Gross Income Deductions Taxable Income Tax A $ 20,000 $ 4,000 16000 B 40,000 16,000 24000 C 80,000 34,000 46000 D 200,000 110,000 90000 Which taxpayer has (a)The highest nominal (or average) tax rate? (b)The highest effective tax rate? (c)The highest marginal tax rate?