Langston Labs has an overall (composite) WACC of 10%, which…

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 Return                                    A                               High                            15%                                    B                            Average                         12%                                    C                               High                            11%                                    D                               Low                              9%                                    E                               Low                              6%   Which set of projects would maximize shareholder wealth?