How can this solution be implemented?

A database specialist needs to review and optimize an Amazon DynamoDB table that is experiencing performance issues. A thorough investigation by the database specialist reveals that the partition key is causing hot partitions, so a new partition key is created. The database specialist must effectively apply this new partition key to all existing and new data.

How can this solution be implemented?
A . Use Amazon EMR to export the data from the current DynamoDB table to Amazon S3. Then use Amazon EMR again to import the data from Amazon S3 into a new DynamoDB table with the new partition key.
B . Use AWS DMS to copy the data from the current DynamoDB table to Amazon S3. Then import the DynamoDB table to create a new DynamoDB table with the new partition key.
C . Use the AWS CLI to update the DynamoDB table and modify the partition key.
D . Use the AWS CLI to back up the DynamoDB table. Then use the restore-table-from-backup command and modify the partition key.

View Answer

Answer: A

Explanation:

https://aws.amazon.com/premiumsupport/knowledge-center/back-up-dynamodb-s3/