Mullineaux Corporation has a target capital structure of $46$ percent common stock, $5$ percent preferred stock, and the balance in debt. Its cost of equity is $15\mathrm{.}8$ percent, the cost of preferred stock is $8\mathrm{.}3$ percent, and the aftertax cost of debt is $6\mathrm{.}8$ percent. What is the WACC given a tax rate of $23$ percent?

$9\mathrm{.}89\%$

$10\mathrm{.}43\%$

$11\mathrm{.}02\%$

$11\mathrm{.}38\%$

$12\mathrm{.}17\%$