A company is currently using a pool of Amazon EC2 Reserved Instances with 1-year reservations to ingest and store constant streaming market data on attached Amazon EBS volumes. They run a nightly batch process on EC2 On-Demand Instances that accesses this data via NFS shares to calculate aggregate statistics, which are not business-critical and can be processed in the next run if a failure occurs. With the Reserved Instance reservations expiring, the company seeks a cost-effective solution for both the continuous data ingestion and the nightly processing. Which of the following solutions would be the most economical? | AWS Certified Solutions Architect - Professional Quiz