What should the project manager do next?

A vendor project manager and team are implementing a software solution across the organization. A customer stakeholder who was not present during the sales process is demanding that the team implement requirements that are out of scope without adding additional cost to the project.

What should the project manager do next?
A . Escalate the issue of the additional requirements to the executive leadership team.
B. Refer the stakeholder to the delivery specifications in the statement of work (SOW).
C. Implement all the requirements the customer has requested.
D. Adjust the scope baseline and schedule baseline accordingly.

Answer: B