After running the CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS command, what has been accomplished?()
A、Retain the data file backup for 7 days.
B、Run the recover process every 7 days.
C、Destroy the physical backup files every 7 days.
D、Destroy the physical backup files older than 7 days.
E、Retain one backup of each data file for at least 7 days.
F、Keep the catalog information in the control file for 7 days.