A customer plans to implement SVC as part of a solution and has concerns regarding the resilience of the SVC architecture. The correct response to this concern is that SVC（）.
- A is stateless with global referencing of metadata
- B is based on cluster architecture with externally provided quorum disks
- C is based on cluster architecture, with quorum held internally on the first cluster node
- D is based on grid architecture, with each node holding a full mirror configuration for all other node