You executed the following query in your database：  FROM V$FLASHBACK_DATABASE_LOG;  What would you determine from the output？（）

Athe time when the last flashback operation in your database was performed

Bthe time when the first flashback operation in your database was performed

Ca list of flashback operations performed in your database using SCN and time

Dthe approximate time and the lowest system change number （SCN） to which you can flash back your database