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choose one You enable Flashback Data Archive for a table for which you want to...

choose one You enable Flashback Data Archive for a table for which you want to track and save all transactions for four years. After some time, the requirement changes for keeping transactions from four to two years. You execute the following command to change the requirement: SQL> ALTER FLASHBACK ARCHIVE fdal MODIFY RETENTION 2 YEAR; What is the outcome?

A.

All historical data older than two years, if any, is purged from the flashback archive FDA1.

B.

An error is returned because the retention period cannot be reduced.

C.

All the flashback data archives are purged and the subsequently created flashback archives are maintained for two years

D.

All historical data older than two years, if any, is archived to flashback logs and the flashback archive is set to new retention time.

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