A firm has a WACC of 12% and an after-tax cost of debt of 7%. It finances itself with equal amounts of debt and equity. a. It is considering an investment project that yields an estimated return on equity of 13%. The project is small and of similar risk to the firms existing projects. Should it undertake the investment? b. Separately, it is considering an investment that yields an estimated return on equity of 17%. The project is small but is riskier than the firms existing projects. Should it undertake the investment