A SysOps administrator is using AWS CloudFormation StackSets to create AWS resources in two AWS Regions in the same AWS account. A stack operation fails in one ...

A SysOps administrator is using AWS CloudFormation StackSets to create AWS resources in two AWS Regions in the same AWS account. A stack operation fails in one Region and returns the stack instance status of OUTDATED.
What is the cause of this failure?

A. The CloudFormation template changed on the local disk and has not been submitted to CloudFormation. B. The CloudFormation template is trying to create a global resource that is not unique. C. The stack has not yet been deployed to the Region. D. The SysOps administrator is using an old version of the CloudFormation API.