Which statement is true?

Refer to the exhibit.

Which statement is true?

A.
There is an MPLS network that is running 6PE, and the ingress PE router has no mpls ip
propagate-ttl.

B.
There is an MPLS network that is running 6VPE, and the ingress PE router has no mpls ip
propagate-ttl.

C.
There is an MPLS network that is running 6PE or 6VPE, and the ingress PE router has mpls ip
propagate-ttl.

D.
There is an MPLS network that is running 6PE, and the ingress PE router has mpls ip
propagate-ttl.

E.
There is an MPLS network that is running 6VPE, and the ingress PE router has mpls ip
propagate-ttl.