Which of the following statements is correct regarding PIM Sparse Mode operations?

A.
Receivers are ???registered??? with RP by their first-hop router

B.
It supports shared trees only assuming all hosts want the multicast traffic

C.
From the RP, traffic flows down a Source Tree to each receiver

D.
It does not support all underlying unicast routing protocols like GBP

E.
Receivers are ???joined??? to the Shared Tree (rooted the rp ) by their local Designated
Router (DR)