A project manager found that some of the project work was not done at the right time and was done in an improper sequence. What do you think was the likely issue? A. This is a project communications breakdown. The project manager needs to re-develop the communication management plan B. The Project Scope document was not properly updated. C. The Work Authorization System was not properly established in the project. D. This is due to poor teamwork. A contract change control system should include: A. Vendor contact information, tracking systems, and approval levels necessary for authorizing changes B. Paperwork, tracking systems, dispute resolution procedures, and approval levels necessary for authorizing changes C. Information database, dispute resolution procedures, and approval levels necessary for authorizing changes D. Tracking systems, legal ramifications for certain actions, and approval levels necessary for authorizing changes