AWS Certified Advanced Networking – Specialty ANS-C00 – Question404

A company wants to migrate its production and development applications to the AWS Cloud across multiple VPCs in three AWS Regions: us-east-1 (N. Virginia), eu-west-1 (Ireland), and ap-southeast-1 (Singapore).
The company needs a scalable solution that provides connectivity between all three Regions. The solution also must provide private connectivity to the company's on-premises data center in Northern Virginia.
Data that is transferred from on premises and data that is transferred between Regions must be encrypted in transit. The company requires predictable network performance and must minimize cost.
The company has initiated a solution by deploying a transit gateway with two route tables in each Region.
One route table is for the production environment, and one route table is for the development environment.
What else must the company do to meet its requirements with the LOWEST latency?

A.
Deploy an AWS Direct Connect connection in us-east-1 and a public VIF to the on-premises data center. On each transit gateway, create a VPN attachment over the public VIF for the production and development route tables. Create transit gateway peering connections to route traffic between Regions.
B. Deploy an AWS Direct Connect connection in us-east-1 and a transit VIF to the on-premises data center. Associate all transit gateways and the transit VIF with a different Direct Connect gateway. Create transit gateway peering connections to route traffic between Regions.
C. Deploy an AWS Direct Connect connection in us-east-1 and a public VIF to the on-premises data center. On each transit gateway, create a VPN attachment over the public VIF for the production and development route tables. Route traffic between Regions through the VPN connections.
D. Deploy an AWS Direct Connect connection in us-east-1 to the on-premises data center. Create one transit VIF for each transit gateway route table, and associate each transit VIF with a Direct Connect gateway. Associate all transit gateways with the Direct Connect gateway. Create transit gateway peering connections to route traffic between Regions.