SIROM Scientific Solutions has $$5$ million of outstanding equity and $$10$ million of bank debt. The bank debt costs $5\%$ per year. The estimated equity beta is $2.$ If the market risk premium is $8\%$ and the risk$-$free rate is $5\%,$ compute the weighted average cost of capital if the firm's tax rate is $25\%.$

A$.9\mathrm{.}5\%$

B$.10\mathrm{.}45\%$

C$.10\mathrm{.}93\%$

D$.9\mathrm{.}98\%$