A、It enables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF

B、It disables provider edge （PE） specific checks on a router when the OSPF process is associated with the VRF

C、It enables the exchange of the "VRF-Lite" capability when the OSPF adjacency is formed.

D、It disables the MPLS processing on the OSPF learned routes inside the VRF