Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transaction?

Which method would you use to undo the changes made by a particular transaction without affecting the changes made by other transaction?

A.
point-in-time recovery

B.
manually enter the appropriate data again

C.
execute the ROLLBACK command with transaction number

D.
flashback the database to before the transaction was committed

E.
determine all the necessary undo SQL statements from FLASHBACK_TRANSACTION_QUERY and use them for recovery.