Which statement applies to a Cisco Nexus 5600 Series Switch?

An engineer changed a configuration and must perform a rollback.
Which statement applies to a Cisco Nexus 5600 Series Switch?
A. The configuration rollback functionality is disabled when FCoE is enabled.
B. A system checkpoint is generated automatically when the running configuration is saved to NVRAM.
C. A user who is assigned to the network-operator user role can perform a rollback.
D. Errors are skipped when an atomic rollback type is triggered.