Which of the following instance types are available as Amazon EBS-backed only? Choose 2
answers

A.
General purpose T2

B.
General purpose M3

C.
Compute-optimized C4

D.
Compute-optimized C3

E.
Storage-optimized 12

Explanation:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/instance-types.html