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A company caches session information for a web application in an Amazon DynamoDB table.

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A company caches session information for a web application in an Amazon DynamoDB table. The company wants an automated way to delete old items from the table.

What is the simplest way to do this?

A.

Write a script that deletes old records; schedule the script as a cron job on an Amazon EC2 instance.

B.

Add an attribute with the expiration time; enable the Time To Live feature based on that attribute.

C.

Each day, create a new table to hold session data; delete the previous day's table.

D.

Add an attribute with the expiration time; name the attribute ItemExpiration.

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