Refer to the Exhibit.
PIM trace on R1:

You have configured PIM on R1. However, you notice that multicast traffic to 225.20.0.1/32 is
dropped. Referring to the exhibit, what is the problem?

A.
The source is a non-Juniper device.

B.
The output displayed does not identify any dropped traffic.

C.
Source-specific multicast (SSM) must be configured.

D.
Reverse-path forwarding check is failing.

Explanation: