Since the final product has already been delivered, the next step is the formal closure of the project. A key activity in project closure includes developing a transition or handover plan to operations, archiving project documents, and completing administrative closure tasks.
According to the PMBOK Guide - Seventh Edition, transition planning and documentation are integral to the Close Project or Phase process.
Option A skips the necessary transition step.
Option B is unnecessary unless there are incomplete deliverables.
Option D is useful but not the primary next step.
References:
PMBOK Guide - Seventh Edition, Delivery and Measurement Performance Domains PMI Closing Process Group Guidelines
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