Which Option Is True About How PIM Sparse Mode Operates

Multiple Choice

Which option is true about how PIM sparse mode operates?

A) If an RP fails and there is no backup RP, multicast traffic will cease flowing in the network.
B) RPs can become bottlenecks, since multicast traffic must always flow through the RP and down the shared tree to get to the receivers.
C) If an RP fails and there is no backup RP, new sources that begin sending will not be discovered by the other PIM routers in the network.
D) RPs switch each traffic flow to the shortest path tree when more than one receiver is present.