____ can be used to bootstrap both the Chef Server and …

____ can be used to bootstrap both the Chef Server and Chef Client software on your EC2 instances.

A.
AWS CloudFormation

B.
AWS Elastic Beanstalk

C.
AWS OpsWorks

D.
Amazon Glacier

Explanation:
AWS CloudFormation can be used to bootstrap both the Chef Server and Chef Client software on your EC2 instances.
http://aws.amazon.com/cloudformation/faqs/