A company runs a stateless web application in production on a group of Amazon EC2 On-Demand Instances behind an Application Load Balancer. The application experiences heavy usage during an 8-hour period each business day. Application usage is moderate and steady overnight. Application usage is low during weekends. The company wants to minimize its EC2 costs without affecting the availability of the application. Which solution will meet these requirements?

• AUse Spot Instances for the entire workload.
• BUse Reserved Instances for the baseline level of usage. Use Spot instances for any additional capacity that the application needs.
• CUse On-Demand Instances for the baseline level of usage. Use Spot Instances for any additional capacity that the application needs.
• DUse Dedicated Instances for the baseline level of usage. Use On-Demand Instances for any additional capacity that the application needs.