How can the user configure that?

A user has setup an RDS DB with Oracle. The user wants to get notifications when someone modifies the
security group of that DB. How can the user configure that?

A.
It is not possible to get the notifications on a change in the security group

B.
Configure SNS to monitor security group changes

C.
Configure event notification on the DB security group

D.
Configure the CloudWatch alarm on the DB for a change in the security group

Explanation:
Amazon RDS uses the Amazon Simple Notification Service to provide a notification when an Amazon RDS event
occurs. These events can be configured for source categories, such as DB instance, DB security group, DB
snapshot and DB parameter group. If the user is subscribed to a Configuration Change category for a DB
security group, he will be notified when the DB security group is changed.