Which two statements about the configuration of APIC controllers in the ACI Fabric are true? (Choose two.)

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Which two statements about the configuration of APIC controllers in the ACI Fabric are true? (Choose two.)

A. Commissioning an APIC can be done via the APIC UI, but decommissioning an APIC must be done using the CLI.
B. Cluster controllers added to the APIC must be running the same version of firmware.
C. An APIC cluster is comprised of multiple controllers that provide monitoring, diagnostic, and configuration capability.
D. When performing planned changes to the cluster, at least one controller in the cluster must be healthy.
E. APIC cluster size is set during the initial setup script, and after it is configured it requires a nondisruptive re-initialization of the APIC cluster to change.