Turner's, Inc. has 3 divisions.

Turner’s, Inc. has 3 divisions. If the divisions could be given separate betas, management believes that division A’s beta would be 5 percent higher than division B’s, and 15 percent lower than division C’s. Division C currently has a proposed project that entails expanding its current operations. Which one of the following is most likely the best approach to take when determining the discount rate to assign to that project?