SIROM Scientific Solutions has $$10$ million of outstanding equity and $$10$ million of bank debt. The bank debt costs $7\%$ per year. The estimated equity beta is $2.$ If the market risk premium is $8\%$ and the risk$-$free rate is $4\%,$ compute the weighted average cost of capital if the firm's tax rate is $25\%.$

A$.14\mathrm{.}52\%$

B$.13\mathrm{.}89\%$

C$.12\mathrm{.}63\%$

D$.13\mathrm{.}26\%$