You are working in an online transaction processing （OLTP） environment. You realize that the salary for an employee， John， has been accidentally modified in the EMPLOYEES table. Two days ago， the data was in the correct state. Flashback logs generated during last two days are available in the flash recovery area. Which option would you choose to bring the data to the correct state while ensuring that no other data in the same table is affected？（）

发布日期：2020-04-10

A.perform pointintime recovery

B.perform a Flashback Table operation to restore the table to the state it was in two days ago

C.perform a Flashback Database operation to restore the database to the state it was in two days ago

D.perform Flashback Versions Query and Flashback Transaction Query to determine all the necessary undo SQL statements， and then use them for recovery

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