Which well-defined routing protocol would a network administrator configure on multicast routers
when member routers are widely dispersed?

A.
Core-Based Trees (CBT)

B.
Multicast Open Shortest Path First (MOSPF)

C.
Protocol Independent Multicast Dense Mode (PIM-DM)

D.
Distance Vector Multicast Routing Protocol (DVMRP)

E.
Protocol Independent Multicast Sparse Mode (PIM-SM)