A project consists of multiple phases. Which of the following is a valid statement and applies to each phase of the project?
A. Each phase is generally concluded with a review of the work accomplished but is only closed if the next phase has already been started.
B. Each phase of the project is considered complete when the project sponsor signs off on that phase of the project.
C. Each phase of the project is generally concluded with a review of the work accomplished and deliverables to determine acceptance and whether the phase should be considered closed.
D. Each phase is generally concluded with a review of the work accomplished. A phase is never considered complete until the end of the project when the entire project can be deemed complete.