A Company Runs a Production Application Workload in a Single

A company runs a production application workload in a single AWS account that uses Amazon Route 53, AWS Elastic Beanstalk, and Amazon RDS. In the event of a security incident, the Security team wants the application workload to fail over to a new AWS account. The Security team also wants to block all access to the original account immediately, with no access to any AWS resources in the original AWS account, during forensic analysis. What is the most cost-effective way to prepare to fail over to the second account prior to a security incident?

A) Migrate the Amazon Route 53 configuration to a dedicated AWS account. Mirror the Elastic Beanstalk configuration in a different account. Enable RDS Database Read Replicas in a different account.
B) Migrate the Amazon Route 53 configuration to a dedicated AWS account. Save/copy the Elastic Beanstalk configuration files in a different AWS account. Copy snapshots of the RDS Database to a different account.
C) Save/copy the Amazon Route 53 configurations for use in a different AWS account after an incident. Save/copy Elastic Beanstalk configuration files to a different account. Enable the RDS database read replica in a different account.
D) Save/copy the Amazon Route 53 configurations for use in a different AWS account after an incident. Mirror the configuration of Elastic Beanstalk in a different account. Copy snapshots of the RDS database to a different account.