Which list of characteristics must all controllers in a mobility group have in common based on best practices?

Which list of characteristics must all controllers in a mobility group have in common based on best practices?
A . mobility group name, version of controller code, Control and Provisioning of Wireless Access Points mode, ACLs, and WLANs (SSIDs)
B . mobility domain name, version of controller code, and Control and Provisioning of Wireless Access Points mode
C . mobility domain name, version of controller code, Control and Provisioning of Wireless Access Points mode, ACLs, and WLANs (SSIDs)
D . mobility group name, version of controller code, and Control and Provisioning of Wireless Access Points mode

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Answer: A