A firm estimates that its average-risk projects have a WACC of 10%, its below-average risk projects have a WACC of 9%, and its above-average risk projects have a WACC of 12%. Which of the following projects (A, B, and C) should the company accept? Project B is of below-average risk and has a return of 10%. Project C is of above-average risk and has a return of 11%. Project A is of average risk and has a return of 9%. None of the projects should be accepted.