A Company Serves Content to Its Subscribers Across the World

A company serves content to its subscribers across the world using an application running on AWS. The application has several Amazon EC2 instances in a private subnet behind an Application Load Balancer (ALB) . Due to a recent change in copyright restrictions, the chief information officer (CIO) wants to block access for certain countries. Which action will meet these requirements?

A) Modify the ALB security group to deny incoming traffic from blocked countries.
B) Modify the security group for EC2 instances to deny incoming traffic from blocked countries.
C) Use Amazon CloudFront to serve the application and deny access to blocked countries.
D) Use ALB listener rules to return access denied responses to incoming traffic from blocked countries.