How does Protocol Independent Multicast function?

How does Protocol Independent Multicast function?
A . It uses unicast routing information to perform the multicast forwarding function.
B . It uses the multicast routing table to perform the multicast forwarding function.
C . In sparse mode it establishes neighbor adjacencies and sends hello messages at 5 -second intervals.
D . It uses broadcast routing information to perform the multicast forwarding function.

View Answer

Answer: A