GT Industries has $6\mathrm{.}5$ million shares of common stock outstanding with a market price of $$12$ per share. The company has outstanding preferred stock with a market value of $$10$ million. The firm also has $25,000$ corporate bonds outstanding each with a face value $$1,000$ and currently selling at $85\%$ of face value on the bond market.The cost of equity is $10\%,$ the cost of preferred stock is $7\%,$ and the pre$-$tax cost of debt is $5\%.$ What is the WACC for GT Industries, assuming the firm has a marginal corporate tax rate of $25\%?$O A$.10\mathrm{.}00\%.9\mathrm{.}30\%$O C$.7\mathrm{.}46\%$O D$.7\mathrm{.}81\%$O E$.8\mathrm{.}51\%$