Which command can be used to check the assignment of RPs to multicast groups？（）

A.it enables PIM BSR
B.it makes the router an Auto-RP mapping agent
C.it advertises the router as an RP with Auto-RP
D.it makes the router an Auto-RP client

A.It will send the join only to the neighbor with the highest IP address.
B.It will send the join only to the neighbor with the lowest IP address.
C.It will send the join in a round-robin fashion across all neighbors.
D.It will send the join to all neighbors.

A.2001：db8：3811：：1
B.2001：db8：3811：：2323
C.2001：db8：3811：：0130
D.2001：db8：3811：：3
E.2001：db8：3811：：6