Which statement about an overlapping VPN is true?

A.
A site participates in more than one VPN.

B.
A site has a link to both the intranet and the Internet.

C.
The VPN contains both private and public address spaces.

D.
The VPN contains two or more overlapping address spaces.

Explanation:
To support connectivity requirements, the MPLS/VPN architecture supports the concepts of sites,
where a VPN is made up of one or multiple sites. A VPN is essentially a collection of sites sharing
common routing information, which means that a site may belong to more than one VPN if it holds
routes from separate VPNs. Reference: MPLS and VPN Architectures (Ciscopress) page 169