A t2.medium EC2 instance type must be launched with what type of Amazon Machine Image (AMI)?

A t2.medium EC2 instance type must be launched with what type of Amazon Machine Image (AMI)?
A . An Instance store Hardware Virtual Machine AMI
B . An Instance store Paravirtual AMI
C . An Amazon EBS-backed Hardware Virtual Machine AMI
D . An Amazon EBS-backed Paravirtual AMI

Answer: A

Explanation:

Reference: http://docs.aws.amazon.com/AWSEC2/Iatest/UserGuide/ec2-instanee-resize.htmI