By default what are ENIs that are automatically created and attached to instances using the EC2 console set to
do when the attached instance terminates?

A.
Remain as is

B.
Terminate

C.
Hibernate

D.
Pause

Explanation:
By default, elastic network interfaces that are automatically created and attached to instances using the console
are set to terminate when the instance terminates. However, network interfaces created using the command
line interface aren’t set to terminate when the instance terminates.
Source:http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-eni.html#change_term_behavior