A global health care company uses AWS CloudFormation templates to deploy applications across various environments. The template includes Amazon EC2 instances and an Amazon RDS database. During the testing phase before the application went live, the Amazon RDS instance type was changed and caused the instance to be re-created, resulting in the loss of test data. Also, when the CloudFormation stacks are deleted, it is mandatory to keep a snapshot of the EBS volumes for backup and compliance purposes. How can this be achieved? (Select TWO.)