You have been asked to automate many routine systems administrator backup and recovery activities. Your current plan is to leverage AWS-managed solutions as much as possible and automate the rest with the AWS CLI and scripts.
Which task would be best accomplished with a script?

A. Creating daily EBS snapshots with a monthly rotation of snapshots
B. Creating daily RDS snapshots with a monthly rotation of snapshots
C. Automatically detect and stop unused or underutilized EC2 instances
D. Automatically add Auto Scaled EC2 instances to an Amazon Elastic Load Balancer