Which of the following situations will cause forwarding failure of multicast traffic? (Multiple Choice)

Which of the following situations will cause forwarding failure of multicast traffic? (Multiple Choice)
A . Multicast packets received on non RPF interfaces.
B . PIM is not enabled on an RPF interface.
C . The upstream router discards the received PIM Join messages.
D . On a network with multiple egress routers, the router is not selected as the D

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Answer: ABC