What is the role of the RP in PIM sparse mode?
A . The RP responds to the PIM join messages with the source of requested multicast group
B . The RP maintains default aging timeouts for all multicast streams requested by the receivers
C . The RP acts as a control-plane node and does not receive or forward multicast packets
D . The RP is the multicast that is the root of the PIM-SM shared multicast distribution tree
Answer: D