Q$12.$ Consider the following information for Company ABC. Current stock price is $$68$ per share, and there are $18$ million shares outstanding. Beta is $0\mathrm{.}8.$ The current value of the company's debt is $$680$ million, with pre$-$tax cost of debt being $6\mathrm{.}9\%.$ The company is subject to a tax rate of $21\%.$ Treasury bills yield $3\%,$ and the expected return on the S&P $500$ index is $7\%.$ Based on this information, what is the company's weighted average cost of capital $($WACC$)?(15$ points$)$