单选题

Which of the following statements is true regarding implementing a Flashback Table recovery?  ()

A An SCN is never used to perform a Flashback Table recovery.

B If a significant number of changes have been made to the table, row movement must be enabled.

C The tablespace must be offline before performing a Flashback Table recovery.

D Flashback Table recovery is completely dependent on the availability of undo data in the undo  tablespace.

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