Which action is recommended prior to the restore operation?

A TimeFinder SnapVX snapshot of a production Storage Group (SG) has been created and the snapshot has been linked to a target SG. A restore of the snapshot to the production SG is required.

Which action is recommended prior to the restore operation?
A . Stop the I/O to and unmount the target SG devices
B . Stop the I/O to devices in both SGs and unlink the snapshot from the target SG
C . Stop the I/O to and unmount the production SG devices
D . Unlink the snapshot from the target SG

Answer: C