Which source of capital receives favorable tax treatment under current US tax laws? O debt O common stock O retained earnings O preferred stock Question 8 10 pts How is the WACC used in decision making? O The WACC is the discount rate used in calculating NPV and it is the "hurdle rate" used with IRR and MIRR The WACC is used by investors to determine which companies to invest in. O The WACC is used as a substitute for MIRR and IRR. The WACC is used to in the Payback Period method of evaluating a project