Which statement accurately describes how PIM sparse mode operates? 

Answer options:

A. RPs can become bottlenecks, since multicast traffic must always flow through the RP and down the shared tree to get to the receivers.
B. RPs switch each traffic flow to the shortest path tree when more than one receiver is present.
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. If an RP fails and there is no backup RP, multicast traffic will cease flowing in the network.

C