Which of the following regarding BGP Path Identifier is FALSE?
A . Path-ID is a four-octet identifier pre-pended to the NLRI field of a BGP update.
B . Path-ID is an optional transitive attribute used to advertise multiple paths.
C . Path-ID uniquely identifies each path advertised to a neighbor.
D . A BGP speaker that re-advertises a route must generate its own Path-I
Answer: B