You have a GitHub repository that contains multiple versions of an Azure Pipelines template. You plan to deploy multiple pipelines that will use a template stor...

You have a GitHub repository that contains multiple versions of an Azure Pipelines template.
You plan to deploy multiple pipelines that will use a template stored in the repository.
You need to ensure that you use a fixed version of the template.
What should you use to reference which version of the template repository to use?

A. the serial B. the SHA-based hashes C. the runner D. the branch