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單項選擇題

At the request of a user， you issue the following command to restore a dropped table： flashback table "BIN$F2JFfMq8Q5unbC0ceE9eJg==$0" to before drop； Later， the user notifies you that the data in the table seems to be very old and out of date. 
What might be the problem？（）  

A. Because a proper range of SCNs was not specified， the wrong data was restored.
B. A proper range of timestamps was not specified， so the wrong data was restored.
C. A previous Flashback Drop operation had been performed， resulting in multiple versions of the table being stored in the Recycle Bin.
D. Either option A or B could be correct. Not enough information was provided to determine which.
E. None of the above.

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