Refer to the individual rate schedules in AppendlC. Do not round you intemediate computations. Round "Marginal tax rate" and "Average tax rate" to 2 decimal places and other answers to the nearest whole dollar amoun a. What are the tax liability, the marginal tax rate, and the average tax rate for a married couple filing jointly with $51.900 taxable income? Tax liability Marginal tax rate 15.00 Average tax rate b. What are the tax liability. the marginal tax rate, and the average tax rate for a single individual with S197.200 taxable income? Tax liability Marginal tax rate Average tax rate c. What are the tax liability, the marginal tax rate, and the average tax rate for a head of household with $446.300 taxable income? Tax liability Marginal tax rate Average tax rate