You have been instructed to establish a successful site-to-site VPN connection from your on-premises network to the VPC (Virtual Private Cloud). As an architect, which of the following pre-requisites should you ensure to establish the site-to-site VPN connection? Choose 2 answers from the options given below.

Answer options:

A.The main route table to route traffic through a NAT instance
B.A public IP address on the customer gateway for the on-premises network
C.A virtual private gateway attached to the VPC
D.An Elastic IP address to the Virtual Private Gateway

Answer - B and C
This is mentioned in the AWS Documentation.
Option A is incorrect since the NAT instance is not required to route traffic via the VPN connection.
Option D is incorrect since the Virtual Private Gateway is managed by AWS.
For more information on VPN connections, please refer to the below link-
https://docs.aws.amazon.com/vpn/latest/s2svpn/SetUpVPNConnections.html