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

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

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

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