You are asked to design a Layer 2 VPN service between service provider networks that
needs Ethernet transport capabilities. The VPN should support two or three endpoints.
Which Layer 2 VPN technology should you propose?

A.
BGP-signaled VPLS, using the RFC 4448 Layer 2 frame format

B.
LDP Layer 2 circuit, using the RFC 4448 Layer 2 frame format

C.
LDP-signaled VPLS

D.
BGP Layer 2 VPN