Changes Made to a Security Group Attached to an Application

Multiple Choice

Changes made to a security group attached to an Application Load Balancer resulted in connectivity issues for a company's production web application. The Network Engineer needs to lock down permissions for the company's AWS account, automate auditing for any changes, and set up notifications. What actions should accomplish this?

A) Configure IAM user policies to lock down permissions for specific users. Enable AWS CloudTrail to identify API calls from users. Use AWS Config to audit any changes, and configure Amazon SNS to send notifications.
B) Configure IAM user policies to lock down permissions for specific users. Enable AWS CloudTrail to identify the API calls from users. Configure AWS CodeCommit to audit any changes in configurations, and configure Amazon SNS to send notifications.
C) Configure IAM user policies to lock down permissions for specific users. Enable AWS CloudTrail to identify the API calls from users. Configure Amazon Macie to use machine learning to identify any configuration changes, and configure Amazon SNS to send notifications.
D) Configure IAM role policies to lock down permissions for specific users. Configure Amazon GuardDuty to audit and monitor configuration changes, and configure Amazon SNS to send notifications.