A company is deploying an application on AWS that uses multiple compute services. The application architecture includes:Amazon EC2 instances for a sporadic, interruptible data ingestion layerAWS Fargate for the application front endAWS Lambda for the API layerThe EC2 workloads are unpredictable and can be interrupted, while usage patterns for the front end and API layers are stable and predictable over the next year.A solutions architect is tasked with selecting the most cost-effective combination of purchasing options across these compute layers. Which two choices best meet the cost optimization requirements?