Suspect Corp. issued a bond with a maturity of $20$ years and a semiannual coupon rate of $6$

percent $2$ years ago. The bond currently sells for $92$ percent of its face value. The company's tax

rate is $35$ percent.

a$.$ What is the pretax cost of debt? $($Do not round intermediate calculations. Enter your answer as

a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

Pretax cost of debt

b$.$ What is the aftertax cost of debt? $($Do not round intermediate calculations. Enter your answer

as a percent rounded to $2$ decimal places, e$.$g$.,32\mathrm{.}16.)$

Aftertax cost of debt

c$.$ Which is more relevant, the pretax or the aftertax cost of debt?

Aftertax cost of debt

Pretax cost of debt