A Software Company Hosts an Application on AWS with Resources

Multiple Choice

A software company hosts an application on AWS with resources in multiple AWS accounts and Regions. The application runs on a group of Amazon EC2 instances in an application VPC located in the us-east-1 Region with an IPv4 CIDR block of 10.10.0.0/16. In a different AWS account, a shared services VPC is located in the us-east-2 Region with an IPv4 CIDR block of 10.10.10.0/24. When a cloud engineer uses AWS CloudFormation to attempt to peer the application VPC with the shared services VPC, an error message indicates a peering failure. Which factors could cause this error? (Choose two.)

A) The IPv4 CIDR ranges of the two VPCs overlap
B) The VPCs are not in the same Region
C) One or both accounts do not have access to an Internet gateway
D) One of the VPCs was not shared through AWS Resource Access Manager
E) The IAM role in the peer accepter account does not have the correct permissions