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After the switchover of Router F, will a branch of the Shared Path Tree still exist between Router D and Router E?

Refer to the following exhibit.

Assume all links have an equal metric in the IGP. Receiver 2 has joined the multicast group and the source is sending.

After the switchover of Router F, will a branch of the Shared Path Tree still exist between Router D and Router E?
A .  Yes. As it is maintained by the PIM hellos, it will exist until Router D or Router E is PIM disabled
B .  Yes, it will exist until the source stops sending multicast traffic
C .  Yes, it will exist until Router D prunes itself from the shared path tree
D .  No. Only Source Path Trees will remain

Answer: C

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