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A solutions architect is tasked with reviewing the design of an Amazon EMR cluster utilizing the EMR File System (EMRFS). This cluster is essential for business operations as it handles critical tasks. Currently, the cluster operates on Amazon EC2 On-Demand Instances for all task, primary, and core nodes continuously. The EMR tasks initiate daily at 1:00 AM and typically conclude within 6 hours. The urgency of task completion is not critical since the processed data is not accessed until later in the day. The solutions architect is required to propose a cost-effective solution for the compute resources. Which recommendation should the solutions architect make to achieve this goal?