Which two statements are true about MSDP mesh groups? (Choose two.)

A.
SA messages received from a mesh group member flood these messages to all peers
that are not members of this mesh group.

B.
SA messages received from a peer not in any mesh group do not flood to all peers.

C.
The MSDP mesh group was originally designed to limit SA flooding.

D.
SA messages received from a peer not in any mesh group perform a peer-RPF check
and, if successful, flood to all peers (except the advertising router).