A PC at site A wants to access server B2 through a LAN-to-LAN tunnel. Which statement is true?

A.
LAN-to-LAN NAT should be performed at both site A and B Concentrator.

B.
LAN-to-LAN NAT is not necessary for this application.

C.
LAN-to-LAN NAT should be performed at site B Concentrator only.

D.
LAN-to-LAN NAT should be performed at site A Concentrator only.