Which solution will meet these requirements?

A company uses AWS Transit Gateway for a hub-and-spoke model to manage network traffic between many VPCs. The company is developing a new service that must be able to send data at 100 Gbps. The company needs a faster connection to other VPCs in the same AWS Region.

Which solution will meet these requirements?
A . Establish VPC peering between the necessary VPCs. Ensure that all route tables are updated as required.
B. Attach an additional transit gateway to the VPCs. Update the route tables accordingly.
C. Create AWS Site-to-Site VPN connections that use equal-cost multi-path (ECMP) routing between the necessary VPCs.
D. Create an additional attachment from the necessary VPCs to the existing transit gateway.

Answer: D