Calculate Walton Inc.$$s WACC using $55\%$ equity with a required return of $15\%,35\%$ debt with a required return of $8\%,10\%$ preferred stock with a required return of $10\%,$ and a tax rate of $35\%.$

Question $26$Select one:

a$.$

$10\mathrm{.}72\%$

b$.$

$12\mathrm{.}05\%$

c$.$

$11\mathrm{.}70\%$

d$.$

$11\mathrm{.}07\%$