Perpetualcold Refrigeration Company (PRC) can borrow funds at an interest rate of 7.30% for a period of six years, Its marginal federal-plus-state tax rate is 25%, PRC's after-tax cost of debt is (rounded to two decimal places). At the present time, Perpetuaicold Refrigeration Company (PRC) has 15 -year noncallable bonds with a face value of $1,000 that are outstanding. These bonds have a current market price of $1,136.50 per bond, carry a coupon rate of 12%, 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.) 9.17% 6,11% 8.79% 7.64%