If you want to launch Amazon Elastic Compute Cloud (EC2) instances and assign each instance a predetermined private IP address you should:

If you want to launch Amazon Elastic Compute Cloud (EC2) instances and assign each instance a predetermined private IP address you should:
A . Launch the instance from a private Amazon Machine Image (AMI).
B . Assign a group of sequential Elastic IP address to the instances.
C . Launch the instances in the Amazon Virtual Private Cloud (VPC).
D . Launch the instances in a Placement Group.
E . Use standard EC2 instances since each instance gets a private Domain Name Service (DNS) already.

Answer: B

Explanation:

http://docs.aws.amazon.com/AWSEC2/Iatest/UserGuide/using-vpc.html