The actual cost of phase I is US$55,000, because additional resource skill sets were required to complete both deliverables I and 2. The deliverables and quality of the project are non-negotiable. Before the opening of phase II occurs, what should the project manager do?
A、Ensure there is a change management document approving the additional US$20.000 to the budget
B、Validate the project plan for phase its resource requirements
C、Determine how US$20,000 will be cut from phase II phase III
D、Determine which deliverables from phase II of phase 3 the stakeholders should reconsider