Scenario: An administrator configured XenServer Role Based Access Control (RBAC) to authenticate using Active Directory. Using RBAC, the administrator must grant Level 2 Support users with permission to start and stop virtual machines. Which two steps must the administrator take to grant Level 2 Support users virtual machine permissions? (Choose two.)
A. Assign a role to the subject.
B. Add an Active Directory group to the pool.
C. Assign XenServer permissions to a group.
D. Add users and their roles to the authorized list of users.