A Company Is Using Amazon DynamoDB with Provisioned Throughput for the Database

A company is using Amazon DynamoDB with provisioned throughput for the database tier of its ecommerce website. During flash sales, customers experience periods of time when the database cannot handle the high number of transactions taking place. This causes the company to lose transactions. During normal periods, the database performs appropriately. Which solution solves the performance problem the company faces?

A) Switch DynamoDB to on-demand mode during flash sales.
B) Implement DynamoDB Accelerator for fast in memory performance.
C) Use Amazon Kinesis to queue transactions for processing to DynamoDB.
D) Use Amazon Simple Queue Service (Amazon SQS) to queue transactions to DynamoDB.