A project management plan should be realistic in order to be used to manage the project. Which of the following is the BEST method to achieve a realistic project management plan?

A. Sponsor creates the project management plan based on input from the project manager

B. Functional manager creates the project management plan based on input from the project manager

C. Project manager creates the project management plan based on input from senior management

D. Project manager creates the project management plan based on input from the team