Can I delete a snapshot of the root device of an EBS vo…

Can I delete a snapshot of the root device of an EBS volume used by a registered AMI?

A.
Only via API

B.
Only via Console

C.
Yes

D.
No

Explanation:
Note that you can’t delete a snapshot of the root device of an EBS volume used by a registered AMI. You must
first deregister the AMI before you can delete the snapshot.
Source: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ebs-deleting-snapshot.html