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In a multi-account AWS environment, you are tasked with establishing VPC peering connections between two VPCs located in different AWS accounts. Each VPC has its own CIDR block, with VPC A using a CIDR block of 10.0.0.0/16 and VPC B using a CIDR block of 10.1.0.0/16. You need to ensure that instances in both VPCs can communicate with each other while adhering to AWS best practices. What is the most critical consideration you must take into account when configuring the VPC peering connection?
Ensure that the CIDR blocks of both VPCs do not overlap.
Configure security groups to allow traffic between the VPCs.
Set up route tables in both VPCs to direct traffic through the peering connection.
Enable DNS resolution for the peering connection.

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