Which of the Following Is True of Unstructured Data

Which of the following is true of unstructured data?

A) It fits nicely into traditional databases.
B) It ensures that any updates to a database generated by a transaction are completed in their entirety.
C) It relies upon concurrency control by locking database records to ensure that other transactions do not modify a database until the first transaction succeeds or fails.
D) It can add a depth to data analysis,with the right tools,that could not be achieved otherwise.