Using the 2020 corporate tax rate: Required: a. What are the tax liability, the marginal tax rate, and the average tax rate for a corporation with $248,300 taxable income? b. What are the tax liability, the marginal tax rate, and the average tax rate for a corporation with $39,253,000 taxable income? Complete this question by entering your answers in the tabs below. Required a Required B What are the tax liability, the marginal tax rate, and the average tax rate for a corporation with $248,300 taxable income? + Tax liability Marginal tax rate Average tax rate % %