An enterprise customer has recently purchased a WAN link from a service provider.
BGP is running over this WAN link.
An engineer notices that the CE router uses an large amount of system resources to process routing updates by filtering out unwanted routing updates received from the PE.
Which configuration can be applied to reduce the amount of processing required on the CE router that is not accepting full routes from PE?
A. Enable BGP flowspec between CE and PE to negotiate which BGP prefixes to advertise
B. Enable BGP prefix-based ORF capability between CE and PE to fitter out unwanted routing updates at the source
C. On CE,place an inbound ACL on the interface-facing PE to filter all unwanted BGP prefixes
D. On CE,apply an outbound route-map on BGP PE-neighbor to filter all the undesired BGP updates learned from the PE
