A user needs to determine whether an Amazon EC2 instance’s security groups were modified in the last month.
How can the user see if a change was made?
A . Use Amazon EC2 to see if the security group was changed.
B . Use AWS Identity and Access Management (IAM) to see which user or role changed the security group.
C . Use AWS CloudTrail to see if the security group was changed.
D . Use Amazon CloudWatch to see if the security group was changed.
Answer: B