Refer to the configuration exhibit, taken from a Cisco IOS-XR router.

Which configuration change is required to properly enable this router as the signaling router
for implementing source-based RTBH filtering?

A.
Set community (no-export) in the route policy

B.
Pass in the route policy

C.
Set local-preference 1000 in the route policy

D.
The 192.0.2.1/32 static route should be tagged as 666 (tag 666)