A company is moving its on-premises applications to Amazon EC2 instances. However, as a result of fluctuating compute requirements, the EC2 instances must always be ready to use between 8 AM and 5 PM in specific Availability Zones.
Which EC2 instances should the company choose to run the applications?

A. Scheduled Reserved Instances B. On-Demand Instances C. Spot Instances as part of a Spot Fleet D. EC2 instances in an Auto Scaling group