A Chief Information Security Officer (CISO) is concerned about new privacy regulations that apply to the company. The CISO has tasked a security analyst with finding the proper control functions to verify that a user's data is not altered without the user's consent. Which of the following would be an appropriate course of action?

A. Automate the use of a hashing algorithm after verified users make changes to their data.
B. Use encryption first and then hash the data at regular, defined times.
C. Use a DLP product to monitor the data sets for unauthorized edits and changes.
D. Replicate the data sets at regular intervals and continuously compare the copies for unauthorized changes.