43. 1he project manager can help to influence the processes that affect change on projects by creating and using the most appropnate planning strategies and tools. Assuming the project manager has created and is executing the best possible project management plan, the project sponsor should help the project 01.111ager to protect the project against unnecessary changes. Which of the following best reflects the phrase, "influencing the factors that affoct change?"

A. Telling people that changes a~ not allowed after planning is complete B. Determming the sources of changes .md fixmg the root causes C. Adding more activities to the work breakdown structure to accommodate risks D. Calculating the impact of changes to date on the project