In which scenario do you use the Flashback Database feature？（）

A.when a table is dropped and you restore it from the Recycle Bin

B.when a user’s schema is dropped and you recover the user’s schema

C.when some incorrect data is inserted in the table and you retrieve the table to a state that was at a certain timestamp

D.when a row of a table is updated frequently and committed， and you view all the versions of the row within a specific duration