A SysOps administrator is investigating why a user has been unable to use RDP to connect over the internet from their home computer to a bastion server running ...

A SysOps administrator is investigating why a user has been unable to use RDP to connect over the internet from their home computer to a bastion server running on an Amazon EC2 Windows instance.
Which of the following are possible causes of this issue? (Choose two.)

A. A network ACL associated with the bastion's subnet is blocking the network traffic. B. The instance does not have a private IP address. C. The route table associated with the bastion's subnet does not have a route to the internet gateway. D. The security group for the instance does not have an inbound rule on port 22. E. The security group for the instance does not have an outbound rule on port 3389.