What should the administrator do to fix this problem?

A network administrator is managing a network that deploys a multicast service. The administrator has multiple streamssuccessfully being routed by PIM-DM in the network. The administrator then adds a new stream with a destination addressof 239.0.0 1. However clients who have not joined the stream are receiving it.

What should the administrator do to fix this problem?
A . Change the destination multicast address to 239 1.1.1.
B . Define the 239 0 0 1 stream on the PIM candidate bootstrap router
C . Define the 239 0 0 1 stream on the rendezvous point (RP).
D . Verify that IGMP is enabled between the switches connecting the multicast source and receivers

Answer: D