ABC's outstanding bonds have an 8% annual coupon payment and will mature in 18 years. The bonds are currently selling for 94.25% of par. If the company can issue new bonds at par with similar YTM, what is ABC's before-tax cost of debt? If ABC's marginal tax rate is 25%, what is its after- tax cost of debt? 9.43%; 7.07% 8.74% : 6.56% 9.07% : 6.80% 8.41%: 6.31% 8.64%; 6.48%