u/Current-Resolve7876

A new project manager joins a project during the delivery of a critical milestone. This project has multiple stakeholders, and each has a different level of interest. The project manager needs to determine how much detail to provide to the stakeholders about the delivery.

Which document should the project manager refer to?

A.Communications management plan
B.Stakeholder register
C.Stakeholder engagement plan
D.Project management plan

I am not understand the answer form PMI.
Could anyone tell me the answer and why?