A company recently migrated its web, application and NoSQL database tiers to AWS. The company is using Auto Scaling to scale the web and application tiers. More than 95 percent of the Amazon DynamoDB requests are repeated read-requests.
How can the DynamoDB NoSQL tier be scaled up to cache these repeated requests?

A. Amazon EMR
B. Amazon DynamoDB Accelerator
C. Amazon SQS
D. Amazon CloudFront