Which three possible misconfigurations can occur on the backbone IGP section of an MPLS Layer
3 VPN setup? (Choose three.)
A.
configuring the LDP router ID with an incorrect loopback interface
B.
configuring the wrong AS number on a client eBGP peering
C.
configuring the wrong area number on a PE-CE OSPF link
D.
decreasing the MPLS MTU
E.
disabling MPLS on a core link
F.
disabling MPLS LDP sync in the IGP routing process