Consider the following projects for Optico Lenses, which has an overall (composite) WACC of 10% that reflects the cost of capital for its average asset. Its assets vary widely in risk, and Optico evaluates low-risk projects with a WACC of 8%, average-risk projects at 10%, and high-risk projects at 12%. Which set of projects would maximize shareholder wealth?

a. A, B, and D b. A, B, C, and D c. A and B d. A, B, and C e. A, B, C, D, and E