How would you implement an overlapping VPN when the sites contained in the overlapping portion of two simple VPNs contain an overlapping address space?

A.
Combine the overlapping VPN with a central service VPN.

B.
Implement a NAT service to provide unidirectional address translation.

C.
Implement a dual NAT service with a registered address to be imported and exported between the two central sites.

D.
Disable routing updates between the overlapping spaces and use a DNS implementation.

E.
Disable routing updates between the overlapping spaces and use static routing