A Change Review Board (CRB) is typically composed of key stakeholders representing the major interests involved in a project-engineering, operations, security, IT, procurement, and other relevant departments.
This cross-functional group ensures that proposed changes are reviewed, justified, and approved collaboratively.
A, C, and D list some roles, but they don't fully represent the project's key partners in a typical governance model.
References:
PSP Study Guide - Project Management and Governance
POA Manual - Change Control and Implementation Oversight