Lannister Manufacturing has a target debt$-$equity ratio of $0\mathrm{.}55$ its cost of equity is $17$ percent, and its cost of debt is $9$ percent. If the tax rate is $35$ percent, what is the company's WACC?

Multiple Choice

$1239\%$

$(3\mathrm{.}04\%$

$9\mathrm{.}81\%$

$13\mathrm{.}7\%$

$10\mathrm{.}8796$