Here are book- and market-value balance sheets of the United Frypan Company (figures in \$ millions): Assume that MM's theory holds except for taxes. There is no growth, and the $75 of debt is expected to be permanent. Assume a 21% corporate tax rate. a. How much of the firm's market value is accounted for by the debt-generated tax shield? (Enter your answer in million rounded to 2 decimal places.) b. What is United Frypan's after-tax WACC if rDebt=6.4% and rEquity=16.6% ? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places.) c. Now suppose that Congress passes a law that eliminates the deductibility of interest for tax purposes after a grace period of 5 years. What will be the new value of the firm, other things equal? Assume a borrowing rate of 6.4%. (Do not round intermediate calculations. Enter your answer in million rounded to 2 decimal places.)