Pls answer for required A, B, & C

Saved Refer to the individual rate schedules in Appendix C. a. What are the tax x lability, the marginal tax rate, and the average tax rate for a married couple filing jointly with $54,900 taxable income? b. What are the tax liability, the marginal tax rate, and the average tax rate for a single individual with $198.700 taxable income? c. What are the tax liability, the marginal tax rate, and the average tax rate for a head of household with $449,300 taxable income? Complete this question by entering your answers in the tabs below. Required ARequired B Required C What are the tax liability, the marginal tax rate, and the average tax rate for a married couple filing jointly with $54,900 taxable income? (Round final Tax liability" to the nearest whole dollar and Average tax rate to 2 decimal places.) Tax liability Marginal tax rate Average tax rate