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What are the prerequisites for enabling Flashback Database? ()

A The database must be started in the MOUNT EXCLUSIVE state.

B The database must have multiplexed control files.

C The database must be opened by using a text-based parameter file instead of a server parameter file (SPFILE).

D The database must be in ARCHIVELOG mode.

E The database must be in the NOMOUNT state.

F The database must be opened in RESTRICTED mode.

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