Which configuration error within an AS can cause a Cisco IOS XR router to not announce certain prefixes to its EBGP peers?

A.	Some prefixes were mistagged with the no-export BGP community.
B.	Some prefixes were set with a MED of 0.
C.	The outbound BGP route policy has only set actions that are defined without any pass actions that are defined.
D.	The inbound BGP route policy has only set actions that are defined without any pass actions that are defined.