Given the information below, compute the after$-$tax WACC for Tiny Corp.

$$ Tiny Corp long term debentures were issued last week at par value of $$30$ million with a yield of $8\%($annual coupons$)$

$$ Tiny Corp has $50,000,000$ shares outstanding. Each share is expected to pay a dividend of $$0\mathrm{.}50$ in perpetuity at $4\%$

$$ The beta $($b$)$ of Tiny Corp shares is $0\mathrm{.}75$

$$ The expected return on the market portfolio is $15\%$

$$ The risk$-$free rate is $5\%$

$$ The tax rate is $30\%$

$11\mathrm{.}86\%$

$8\mathrm{.}00\%$

$13\mathrm{.}07\%$

$10\mathrm{.}91\%$