Which Difference Should Be Considered When Intradomain or Interdomain Multicast

Which difference should be considered when intradomain or interdomain multicast routing is implemented?

A) Interdomain multicast routing relies on PIM-DM, and intradomain multicast routing relies on PIM-SM
B) Interdomain multicast routing uses BIDR-PIM to establish neighbor relationships between AS, and intradomain multicast routing uses MSDP
C) A network uses intradomain multicast routing without interdomain routing, but networks that use interdomain multicast routing must also apply intradomain routing
D) Interdomain multicast routing requires an IS-IS or OSPF neighbor relationship between the domains, but intradomain multicast routing requires only BGP