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.
LDP-signaled VPLS

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

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

D.
BGP Layer 2 VPN