Given the following AWS CloudFormation template:

What is the MOST efficient way to reference the new Amazon S3 bucket from another AWS CloudFormation template?

A. Add an Export declaration to the Outputs section of the original template and use ImportValue in other templates.
B. Add Exported: true to the Contentbucket in the original template and use ImportResource in other templates.
C. Create a custom AWS CloudFormation resource that gets the bucket name from the ContentBucket resource of the first stack.
D. Use Fn::Include to include the existing template in other templates and use the ContentBucket resource directly.