Which statement describes optional transitive BGP attributes?

Which statement describes optional transitive BGP attributes?
A . If they are not recognized, they are ignored and not passed to other peers.
B . Although not required, they should be passed along, unchanged to other BGP peers when included.
C . They must be supported in all BGP implementations, but do not have to be included in every BGP update.
D . They must be supported by all BGP implementations and must be included in every BGP update.

View Answer

Answer: B