The market value of DRK Inc.$\text{'}$s debt is $$200,000,000$ and the market value of the

total firm capitalization $$600,000,000.$ The beta is $1\mathrm{.}15,$ the risk free rate is $1\mathrm{.}50\%,$

the risk premium is $13\mathrm{.}25\%,$ the cost of debt is $8\mathrm{.}00\%,$ and the tax rate is $34\mathrm{.}00\%.$

What is this firm's WACC?

$9\mathrm{.}10\%$

$10\mathrm{.}56\%$

$12\mathrm{.}92\%$

$8\mathrm{.}52\%$