You are monitoring a network that is configured with PIM sparse mode. An end user’s PC (PC1)
joins a multicast stream. The stream never switches from the rendezvous-point tree (RPT) to the
shortest-path tree (SPT).
Which two statements explain this behavior? (Choose two.)

A.
An interface on the SPT is not configured for PIM.

B.
The designated router for PCI’s LAN does not have a route to the multicast source.

C.
This is the normal operation of PIM sparse mode.

D.
This is a source-specific multicast (SSM) stream.

Explanation: