Data corruption of an application running on a UNIX host has occurred. Fortunately, a previous point-in-time copy of the data is available on Symmetrix BCV Devices. Which steps should be performed before a TimeFinder Restore operation can be is initiated?

A.
Convert the Standard Devices to BCVs; ensure that the BCVs are unmounted and not in use

B.
Stop the production application, unmount the filesystem; unmap the Standard Devices on which the application is stored

C.
Ensure that the BCVs are not mapped to any Symmetrix Front End Ports; mount the Standard Devices for the production application

D.
Ensure that the BCVs are unmounted and not in use; stop the production application