A project manager has been assigned to a project and receives the project charter from the project management office $($PMO$).$ The document is very clear about

customer requests. During Project Scope Management, some requirements seem to be different from the ones specified within the project charter.

What should the project manager do$?$

Use a focus group and brainstorming sessions to gather more details about the project scope.

Register the changes in the configuration management plan and send it to the change control board $($CCB$).$

Explain to the sponsor that these requests could endanger the schedule and cost of the project.

Modify the baseline of the project for minor impact changes to the project scope.