Dunder$-$Mifflin, Inc. $($DMI$)$ is selling $600,000$ bonds to raise money for the publication of new magazines in the coming year. The bonds will pay a coupon rate of $12\%$ on semiannual payments. and will mature in thirty years. Its par value is $$100.$ What is the cost of debt to DMI if the bonds raise $$66,000,000?$

$10\mathrm{.}87\%$

$10\mathrm{.}56\%$

$10\mathrm{.}22\%$

$11\mathrm{.}40\%$

$11\mathrm{.}93\%$