The suggested answer is C, E.
In a standalone Cisco ISE (Identity Services Engine) deployment, a node can be configured with multiple personas. The two relevant personas for this type of setup are the Administration persona and the Policy Service persona. The Administration persona is responsible for the administrative and management functions of Cisco ISE, such as configuring settings and managing policies. The Policy Service persona handles the policy enforcement, protocols, and network access control services. These two roles are essential for the functioning of a standalone deployment and are hence the correct options.