A customer is running an application with large block files that contain images and video files.  They have a requirement for a low cost storage solution.  The consultant recommended considering the NAS solution.  Which of the following benefits will the NAS solution provide？（）

• A、Utilizes existing infrastructure
• B、Provides direct host attached solution
• C、NAS storage will use the reliable iSCSI protocol
• D、Long distances after upgrading all host connections to fibre