Assume the market value of Ford's equity, preferred stock, and debt are $$8$ billion, $$2$ billion, and $$11$ billion, respectively. Ford has a beta of $1\mathrm{.}6,$ the market risk premium is $7\%,$ and the risk $-$ free rate of interest is $4\%.$ Ford's preferred stock pays a dividend of $$4$ each year and trades at a price of $$29$ per share. Ford's debt trades with a yield to maturity of $9\%.$ What is Ford's weighted average cost of capital if its tax rate is $25\%?$

A$.11\mathrm{.}24\%$

B$.11\mathrm{.}77\%$

C$.12\mathrm{.}84\%$

D$.10\mathrm{.}7\%$