A firm has a cost of debt of $6\mathrm{.}5$ percent and a cost of equity of $11\mathrm{.}9$ percent. The debt$-$equ is $\mathrm{.}50.$ There are no taxes.

The firm's weighted average cost of capital $($WACC$)$ is closest to:

No answer text provided.

$10\%$

$8\%$

$12\%$