The project is having problems with structure and processes and everyone seems to be doing what they want to do. The project manager decides to set the ground rules to solve this problem. What is the most important thing the PM should focus on?

A. Having a team charter of team would work throughout the project B. Setting Meeting rules for everyone to follow C. The Conduct rules for acceptable behavior in the workplace and team D. Clearly articulating Do’s and don'ts for everyone in the team