Which three features does GETVPN support to improve deployment and scalability? (Choose three.)

A.
configuration of multiple key servers to work cooperatively

B.
allowing traffic to be discarded until a group member registers successfully

C.
local exceptions in the traffic classification ACL

D.
GDOI protocol configuration between group members and the key server

E.
redundant IPsec tunnels between group members and the key server

F.
redundant multicast replication streaming through the use of a bypass tunnel