Which statement about implementing the Cisco IPv6 provider Edge Router over MPLS is true?

A.
6PE feature is supported over tunnels other than RSVP-TE tunnels.

B.
Core MPLS routers are supporting IPv6 ONLY.

C.
6PE feature is not supported over tunnels other than RSVP-TE tunnels.

D.
Core MPLS routers are supporting IPv4 only.

Explanation:
Reference: http://www.cisco.com/en/US/docs/ios/ipv6/configuration/guide/ip6-over_mpls.pdf