Langston Labs has an overall (composite) WACC of 10%, which reflects the cost of capital for its average asset. Its assets vary widely in risk, and Langston evaluates low-risk projects with a WACC of 8%, average-risk projects at 10%, and high-risk projects at 12%. The company is considering the following projects:Project Risk Expected ReturnA High 15%B Average 12%C High 11%D Low 9%E Low 6%Which set of projects would maximize shareholder wealth?1) A, B, C, D, and E2) A, B, and C3) A, B, and D4) A and B5) A, B, C, and D

WACC for higher risk projects combined with lower risk project will reduce the overall risk exposure. The projects with high risk might also provide high rate of return but volatility will be high for such projects. Those projects are selected which has rate of return higher than WACC. The project A has high risk but its rate of return is 15% which is 3% higher than in its WACC. The project B has average risk with rate of return 12% while the WACC is 10%. The project D should be selected because it has low risk with rate of return 9% which is 1% higher return than the cost of capital.