An Amazon Redshift cluster is used to store sensitive information of a business-critical application. The regulatory guidelines mandate tracking audit logs of the Redshift cluster. The business needs to store the audit logs securely by encrypting the logs at rest. The logs are to be stored for a year at least and audits need to be conducted on the audit logs on a monthly basis. Which of the following is a cost-effective solution that fulfills the requirement of storing the logs securely while having access to the logs for monthly audits?