Which three are true concerning Automatic Block Media Recovery in a Data Guard environment when running an application as an ordinary Oracle user?
(Choose three.)
A. Real Time Query must be enabled on the primary database.
B. Real Time Query must be enabled on the physical standby database.
C. If a physically corrupt block is discovered on a physical standby database, then a valid block image from the primary database is retrieved.
D. If a physically corrupt block is discovered on the primary database, then a valid block image from a physical standby database is retrieved.
E. If a physically corrupt block is discovered on a logical standby database, then a valid block image from the primary database is retrieved.
F. If a physically corrupt block is discovered on a primary database, then a valid block image from the logically standby database is retrieved.