What are three drawbacks of VPLS? (Choose three.)
A . Direct-attached VPLS requires a full mesh of pseudowires.
B . VPLS cannot support IP bridging (as defined in the VPLS standard).
C . MAC scalability may be problematic, since customer MACs will be visible on the service provider network.
D . VPLS requires a large amount of multicast and broadcast replication.
Answer: ACD