Calculate the aftertax cost of debt under each of the following conditions. (Do not round intermediate calculations. Input your answers as a percent rounded to 2 decimal places.)

\begin{tabular}{|l|r|l|r|l|l|l|} \hline & \multicolumn{2}{|c|}{ Yield } & \multicolumn{2}{c|}{ Corporate Tax Rate } & \multicolumn{2}{c|}{ Aftertax Cost of Debt } \\ \hline a. & 12.0 & % & 26 & % & & % \\ \hline b. & 12.6 & % & 40 & % & & % \\ \hline c. & 10.4 & % & 30 & % & & % \\ \hline \end{tabular}