Project managers must make a decision regarding the procurement of physical resources for individual activities and the overall project. Which one of the following is true about this process? A. Project managers are obliged to conduct the activities with the project team's resources at hand. B. Project managers can decide to override the organization's standard procurement documents and processes. C. Project managers can ignore the project schedule management plan since this plan may not be helpful all the time while making purchases. D. Project managers utilize "make or buy analysis" frequently during a project