A company is migrating its on-premises workload to the AWS Cloud. The company already uses several Amazon EC2 instances and Amazon RDS DB instances. The company wants a solution that automatically starts and stops the EC2 instances and DB instances outside of business hours. The solution must minimize cost and infrastructure maintenance. Which solution will meet these requirements?

• AScale the EC2 instances by using elastic resize. Scale the DB instances to zero outside of business hours.
• BExplore AWS Marketplace for partner solutions that will automatically start and stop the EC2 instances and DB instances on a schedule.
• CLaunch another EC2 instance. Configure a crontab schedule to run shell scripts that will start and stop the existing EC2 instances and DB instances on a schedule.
• DCreate an AWS Lambda function that will start and stop the EC2 instances and DB instances. Configure Amazon EventBridge to invoke the Lambda function on a schedule.