You have 3 VPCs that need to be able to pass traffic. In what two ways can you achieve this? (Choose two.)

A. Peer each VPC to every other VPC to create a full mesh peering.
B. Peer them, VPC peering allows transitive peering as of December 2017.
C. Call AWS to enable transitive peering.
D. Create VPNs between them and adjust the routing tables accordingly.