ABC collmpany uses only debt equity. It can borrow unlimited at an interest rate of $10\%$ as long as it finances At its target capital structure, which calls for $50\%$ debt and $50\%$ equity. Its last dividend was $$1\mathrm{.}46,$ it$$s expected constant growth rate is $8\%$ and it$$s stock still sells for $$24.$ ABC companies tax rate is $21\%.$Four projects are available project A cost $$250$ million in return$=13\%$ project B cost $125$ milion return$=12\%$ project C cost $$200$ million and return$=11\%$ project D cost $$150$ million and return $=10\%.1$a$)$ what is ABC Companys cost of common stock? $1$b$)$ What is ABC Company's WACC? $1$c$)$ What should be the optimal budget?