Kountry Kitchen has a cost of equity of $10\mathrm{.}8$ percent, a pretax cost of debt of $6\mathrm{.}3$ percent, and the tax rate is $21$ percent. If the company's WACC is $9\mathrm{.}01$ percent, what is its debt$-$equity ratio?

Multiple Choice

$\mathrm{.}31$

$1\mathrm{.}41$

$2\mathrm{.}25$

$\mathrm{.}44$

$\mathrm{.}57$