A customer wants to create backups at a remotely located datacenter.  Price and performance are of primary importance， so backup to disks at the remote location is selected instead of tape.  The remote location is 1 KM （0.6 Miles） away from the data center.  NAS is the solution being considered.  Which of the following is the benefit of this solution？（）

• A、NAS runs on 2Gb fibre， which will provide better performance.
• B、NAS uses WAN infrastructure， which can easily span the 1 KM gap.
• C、NAS requires fibre storage， which allows dual paths for redundancy.
• D、NAS requires iSCSI routers and offers better growth environment.