Which of the following are secure options for storing the contents of the Operator CD,...

Store the CD in a physical safe and mount the CD every time Vault maintenance is performed

Copy the entire contents of the CD to the system Safe on the Vault

Copy the entire contents of the CD to a folder on the Vault Server and secure it with NTFS permissions

Store the server key in a Hardware Security Module (HSM) and copy the rest the keys from the CD to a folder on the Vault Server and secure it with NTFS permissions