A development team uses EBS-backed EC2 instances only on weekdays from 08:00 to 18:00. Work may resume the next morning, so EBS data must persist. The team wants to reduce compute charges outside those hours. Which TWO statements describe an appropriate approach? (Choose TWO.)

1. Keep all instances running and rely on setting their CPU utilization to zero to stop compute billing.
2. Budget for retained EBS volumes and other separately billed resources while the instances are stopped.
3. Automate stopping the instances outside business hours and starting them before the workday.
4. Assume stopping an instance also suspends all Savings Plan or Reserved Instance spending commitments.
5. Terminating every instance always preserves its root EBS volume regardless of DeleteOnTermination settings.