Which solution meets these requirements?

A security engineer need to ensure their company’s uses of AWS meets AWS security best practices. As part of this, the AWS account root user must not be used for daily work. The root user must be monitored for use, and the Security team must be alerted as quickly as possible if the root user is used.

Which solution meets these requirements?
A . Set up an Amazon CloudWatch Events rule that triggers an Amazon SNS notification.
B . Set up an Amazon CloudWatch Events rule that triggers an Amazon SNS notification logs from S3 and generate notifications using Amazon SN
D . Set up a rule in AWS config to trigger root user events. Trigger an AWS Lambda function and generate notifications using Amazon SN
F . Use Amazon Inspector to monitor the usage of the root user and generate notifications using Amazon SNS

Answer: A