Which three statements about the Cisco IOS XR task-based user authorization method are true? (Choose three.)

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Which three statements about the Cisco IOS XR task-based user authorization method are true? (Choose three.)

A. A user's association with a particular user group links that user to a particular set of task IDs. A user that is associated with a task ID can execute any operation associated with that task ID.
B. Users can be assigned only to one user group.
C. Every user group is associated with one or more task groups.
D. Every task group is defined by a set of task IDs.
E. Each user is assigned a privilege level.
F. Each IOS XR CLI command is assigned a privilege level.
G. A task ID maps the IOS XR command to a privilege level.