How can DynamoDB costs be minimized while maximizing application performance?

Queries to an Amazon DynamoDB table are consuming a large amount of read capacity. The table has a significant number of large attributes. The application does not need all of the attribute data.

How can DynamoDB costs be minimized while maximizing application performance?
A . Batch all the writes, and perform the write operations when no or few reads are being performed.
B . Create a global secondary index with a minimum set of projected attributes.
C . Implement exponential backoffs in the application.
D . Load balance the reads to the table using an Application Load Balancer.

Answer: C

Explanation:

https://docs.aws.amazon.com/AWSEC2/latest/APIReference/query-api-troubleshooting.html