A project team consists of 15 people including the project manager. The team experiences expected problems requiring additional team resources. The project manager obtains three additional team members. Why is it important for the project manager to understand the number of communication channels on a project?
A、The number must be known to the project manager can decide whether to use the formal or informal communication.
B、The number is inversely proportional to the complexity of communications.
C、The number must be known so the project manager can develop an approved communication plan.
D、The number increases with the complexity of managing communications.