A company has a mobile chat application with a data store based in Amazon DynamoDB. Users would like new messages to be read with as little latency as possible. A solutions architect needs to design an optimal solution that requires minimal application changes. Which method should the solutions architect select?

• AConfigure Amazon DynamoDB Accelerator (DAX) for the new messages table. Update the code to use the DAX endpoint.
• BAdd DynamoDB read replicas to handle the increased read load. Update the application to point to the read endpoint for the read replicas.
• CDouble the number of read capacity units for the new messages table in DynamoDB. Continue to use the existing DynamoDB endpoint.
• DAdd an Amazon ElastiCache for Redis cache to the application stack. Update the application to point to the Redis cache endpoint instead of DynamoDB.