A Custom Application Must Be Installed on All Amazon EC2

Multiple Choice

A custom application must be installed on all Amazon EC2 instances. The application is small, updated frequently and can be installed automatically. How can the application be deployed on new EC2 instances?

A) Launch a script that downloads and installs the application using the Amazon EC2 user data.
B) Create a custom API using Amazon API Gateway to call an installation executable from an AWS CloudFormation Template.
C) Use AWS Systems Manager to inject the application into an AMI.
D) Configure AWS CodePipeline to deploy code changes and updates.