Which statement about IPv6 PIM-SM is true?
A. IGMP is used by the IPv6 hosts to report their multicast group memberships to the routers attached in the same segment.
B. The list of a (*, G) entry includes all the interfaces elected as DF and that have received either an IGMP or PIM join message.
C. Routers use the MLD protocol to learn whether members of a group are present on their directly attached interfaces.
D. The source-based trees do not exist; instead, RP builds a shared tree used by source to forward the multicast traffic.
