You have configured PIM dense mode on your network. One of your PIM-enabled routers is not in
the path of the source-based tree between the source and the receivers, and has no need for the
multicast traffic. Which behavior would you expect from that router?
The router will send register stop messages to the RP.
The router will send prune messages to its upstream router.
The router will send assert messages to the RP.
The router will send graft messages to its upstream router.