AWS Certified Solutions Architect - Professional (#310)

You want to mount an Amazon EFS file system on an Amazon EC2 instance using DNS names. Which of the following generic form of a mount target's DNS name must you use to mount the file system?

availability-zone.file-system-id.efs.aws-region.amazonaws.com
efs-system-id.availability-zone.file-aws-region.amazonaws.com
$file-system-id.$availability-zone.$efs.aws-region.$amazonaws.com
#aws-region.#availability-zone.#file-system-id.#efs.#amazonaws.com