Which analytics strategy is MOST cost-effective for the company to use?

A company stores 200 GB of data each month in Amazon S3. The company needs to perform analytics on this data at the end of each month to determine the number of items sold in each sales region for the previous month.

Which analytics strategy is MOST cost-effective for the company to use?
A . Create an Amazon Elasticsearch Service (Amazon ES) cluster. Query the data in Amazon E
B . Visualize the data by using Kibana.
C . Create a table in the AWS Glue Data Catalog. Query the data in Amazon S3 by using Amazon Athena. Visualize the data in Amazon QuickSight
D . Create an Amazon EMR cluster Query the data by using Amazon EMR, and store the results in Amazon S3 Visualize the data in Amazon QuickSight.
E . Create an Amazon Redshift cluster. Query the data in Amazon Redshift, and upload the results to Amazon S3. Visualize the data in Amazon QuickSight.

Answer: A