Corporation AB's marginal tax rate is 15 percent, and Corporation YZ's marginal tax rate is 21 percent. a. If both corporations are entitled to an additional $6,400 deduction, how much tax savings will the deduction generate for each corporation? b. If both corporations are entitled to a $6,400 tax credit, how much tax savings will the credit generate for each corporation? (Assume that each corporation's precredit tax exceeds $6,400.) Complete this question by entering your answers in the tabs below. Required A Required B If both corporations are entitled to an additional $6,400 deduction, how much tax savings will the deduction generate for each corporation? Tax savings Corporation AB Corporation YZ Required A Required B If both corporations are entitled to a $6,400 tax credit, how much tax savings will the credit generate for each corporation? (Assume that each corporation's precredit tax exceeds $6,400.) Corporation YZ Tax savings Corporation AB