Controllers in a mobility group must all have which of these characteristics in common?

Controllers in a mobility group must all have which of these characteristics in common?

A.
mobility group name, version of controller code, and Control and Provisioning of Wireless Access Points mode

B.
mobility domain name, version of controller code, Control and Provisioning of Wireless Access Points mode, ACLs, and WLANs (SSIDs)

C.
mobility group name, version of controller code, Control and Provisioning of Wireless Access Points mode, ACLs, and WLANs (SSIDs)

D.
mobility domain name, version of controller code, and Control and Provisioning of Wireless Access Points mode