In PIM-SM, how does each router learn the location of the RP?
A . The router of the RP multicasts RP set information to all PIM routers.
B . The BSR multicasts RP set information hop by hop to all PIM routers.
C . The candidate RP router unicasts RP information to the BS
E . The BSR unicasts RP set information hop by hop to all routers
Answer: B, C