A. Run an Amazon EMR cluster that uses a MapReduce job to examine the CloudTrail trails.
B. Use the events history feature of the CloudTrail console to query the CloudTrail trails.
C. Write an AWS Lambda function to query the CloudTrail trails. Configure the Lambda function to be executed whenever a new file is created in the CloudTrail S3 bucket.
D. Create an Amazon Athena table that looks at the S3 bucket the CloudTrail trails are being written to. Use Athena to run queries against the trails.

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