A Company Recently Transformed Its Legacy Infrastructure Provisioning Scripts to AWS

A company recently transformed its legacy infrastructure provisioning scripts to AWS CloudFormation templates. The newly developed templates are hosted in the company's private GitHub repository. Since adopting CloudFormation, the company has encountered several issues with updates to the CloudFormation templates, causing execution or creating environment. Management is concerned by the increase in errors and has asked a Solutions Architect to design the automated testing of CloudFormation template updates. What should the Solution Architect do to meet these requirements?

A) Use AWS CodePipeline to create a change set from the CloudFormation templates stored in the private GitHub repository. Execute the change set using AWS CodeDeploy. Include a CodePipeline action to test the deployment with testing scripts run by AWS CodeBuild.
B) Mirror the GitHub repository to AWS CodeCommit using AWS Lambda. Use AWS CodeDeploy to create a change set from the CloudFormation templates and execute it. Have CodeDeploy test the deployment with testing scripts run by AWS CodeBuild.
C) Use AWS CodePipeline to create and execute a change set from the CloudFormation templates stored in the GitHub repository. Configure a CodePipeline action to be deployment with testing scripts run by AWS CodeBuild.
D) Mirror the GitHub repository to AWS CodeCommit using AWS Lambda. Use AWS CodeBuild to create a change set from the CloudFormation templates and execute it. Have CodeBuild test the deployment with testing scripts.