You are managing an Oracle Database 11g database. The database is open， and you plan to perform
Recovery Manager （RMAN） backups. 
Which three statements are true about these backups（）

In your production database， data manipulation language （DML） operations are executed on the SALES table.You have noticed some dubious values in the SALES table during the last few days. You are able to track
users， actions taken， and the time of the action for this particular period but the changes in data are not tracked.You decide to keep track of both the old data and new data in the table along with the user information. 
Whataction would you take to achieve this task（）