A SysOps Administrator Has Been Notified That Some Amazon EC2

Multiple Choice

A SysOps Administrator has been notified that some Amazon EC2 instances in the company's environment might have a vulnerable software version installed. What should be done to check all of the instances in the environment with the LEAST operational overhead?

A) Create and run an Amazon Inspector assessment template.
B) Manually SSH into each instance and check the software version.
C) Use AWS CloudTrail to verify Amazon EC2 activity in the account.
D) Write a custom script and use AWS CodeDeploy to deploy to Amazon EC2 instances.