Which statement about creating a mobility group is true, excluding mobility anchors?

Which statement about creating a mobility group is true, excluding mobility anchors?
A. Each WLC must use the same mobility name and be defined as a peer in each other’s static mobility members list.
B. If WLCs with HA SSO are deployed, each WLC in the WLC HA pair considered separately as a mobility peer.
C. The WLCs do not have to be of the same model or type to be a member of a mobility group, however each member should be running different software versions.
D. A mobility groups does not require all WLCs in the group to use the same virtual IP address.