How should you describe this feature to the customer?

A customer has an existing database maintained on an IBM Storwize V7000 storage system. New RPO objectives with multiple sample points are being requested. You recommend the IBM Storwize V7000 as it supports “FlashCopy Consistency Groups” which will potentially resolve this new business requirement.

How should you describe this feature to the customer?
A . It performs the intracluster copying of a volume, in which both volumes belong to the same system and I/O Group within the system.
B . It preserves point-in-time data write order across multiple volumes for applications that include related data which spans multiple volumes.
C . It has an asynchronous remote copy technique with change volumes replicates point-in-time images on a cycling period. The default is 300 seconds.
D . It has synchronous remote copy technique that ensures that writes are committed at both the master and auxiliary volumes before write completion is acknowledged to the host.

Answer: B