A developer is using AWS CodeDeploy to automate a company's application deployments to Amazon EC2.
Which application specification file properties are required to ensure the software deployments do not fail? (Choose two.)

A. The file must be a JSON-formatted file named appspec.json.
B. The file must be a YAML-formatted file named appspec.yml.
C. The file must be stored in AWS CodeBuild and referenced from the application's source code.
D. The file must be placed in the root of the directory structure of the application's source code.
E. The file must be stored in Amazon S3 and referenced from the application's source code.