What is the MOST cost-effective DR option for the company’s SAP HANA database?

A company is designing a disaster recovery (DR) strategy for an SAP HANA database that runs on an Amazon EC2 instance in a single Availability Zone The company can tolerate a long RTO and an RPO greater than zero if it means that the company can save money on its DR process.

The company has configured an Amazon CloudWatch alarm to automatically recover the EC2 instance if the instance experiences an unexpected issue. The company has set up AWS Backint Agent for SAP HANA to save the backups into Amazon S3.

What is the MOST cost-effective DR option for the company’s SAP HANA database?
A . Set up AWS CloudFormation to automatically launch a new EC2 instance for the SAP HANA database in a second Availability Zone from backups that are stored in Amazon S3 When the SAP HANA database is operational perform a database restore by using the standard SAP HANA restore process.
B. Launch a secondary EC2 instance for the SAP HANA database on a less powerful EC2 instance type in a second Availability Zone Configure SAP HANA system replication with the preload option turned off
C. Launch a secondary EC2 instance tor the SAP HANA database on an equivalent EC2 instance type in a second Availability Zone Configure SAP HANA system replication with the preload option turned on
D. Set up AWS CloudFormation to automatically launch a new EC2 instance for the SAP HANA database in a second Availability Zone from backups that are stored in Amazon Elastic Block Store (Amazon EBS) When the SAP HANA database is operational perform a database restore by using the standard SAP HANA restore process

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Answer: A