A company's leverage ratio $(\frac{D}{V})$ is $30\%,$ its cost of equity is $13\%,$ its cost of debt is $8\%,$ and

the corporate tax rate is $35\%.$ Determine this company's WACC.

a$.10\mathrm{.}66\%$

b$.11\mathrm{.}50\%$

c$.10\mathrm{.}50\%$

d$.$ None of the above