What can an Administrator do to monitor whether an organization-s instances are compliant with corporate policies and guidelines?

A. Check the instances- metadata to determ

ine what software is running.

B. Use AWS CloudTrail logs to identify the applications running on the instances.

C. Set CloudWatch alarms that are triggered with any software change on the instances.

D. Using Config Rules in the AWS Cofig service to check t

he instance-s configuration and applications.