What is an advantage of using BFD?

What is an advantage of using BFD?
A . BFD is so lightweight that each protocol will generate its own unique BFD session by default, to replace its own hello messages.
B . BFD built to handle the routing table of the entire Internet, and can safely redistribute it into OSPF.
C . One BFD monitoring session can be used by multiple protocols.
D . BFD is built to handle the routing table of the entire Internet, unlike IGPS.

View Answer

Answer: C