To calculate the after-tax cost of debt, multiply the before-tax cost of debt by . Perpetualcold Refrigeration Company (PRC) can borrow funds at an interest rate of 10.20% for a period of eight years. Its marginal federal-plus-state tax rate is 25%. PRCs after-tax cost of debt is (rounded to two decimal places). At the present time, Perpetualcold Refrigeration Company (PRC) has 10-year noncallable bonds with a face value of $1,000 that are outstanding. These bonds have a current market price of $1,278.41 per bond, carry a coupon rate of 11%, and distribute annual coupon payments. The company incurs a federal-plus-state tax rate of 25%. If PRC wants to issue new debt, what would be a reasonable estimate for its after-tax cost of debt (rounded to two decimal places)? (Note: Round your YTM rate to two decimal place.) 6.06% 6.32% 4.22% 5.27%