Which difference occurs between intradomain and interdomain routing technology?
A. PIM is used in intradomain routing technology and uses reverse path forwarding mechanism to implement optimize multicast data forwarding.
B. MSDP is used in intradomain routing technology to discover the multicast source.
C. Interdomain routing technology uses MSDP and M-BGP for exchanging multicast routing information.
D. RP is not needed in intradomain routing technology, but RP is needed in interdomain routing technology to receive multicast traffic.
