What are the alternative possibilities for creating an AMI on AWS?

You need to create an Amazon Machine Image (AMI) for a customer for an application which does not appear to be part of the standard AWS AMI template that you can see in the AWS console.

What are the alternative possibilities for creating an AMI on AWS?
A . You can purchase an AMIs from a third party but cannot create your own AM
C . You can purchase an AMIs from a third party or can create your own AM
E . Only AWS can create AMIs and you need to wait till it becomes available.
F . Only AWS can create AMIs and you need to request them to create one for you.

Answer: B

Explanation:

You can purchase an AMIs from a third party, including AMIs that come with service contracts from organizations such as Red Hat. You can also create an AMI and sell it to other Amazon EC2 users.

After you create an AMI, you can keep it private so that only you can use it, or you can share it with a specified list of AWS accounts. You can also make your custom AMI public so that the community can use it. Building a safe, secure, usable AMI for public consumption is a fairly straightforward process, if you follow a few simple guidelines.

Reference: http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html