Which Is the Correct Procedure for Keeping an Industrial Patient's

Which is the correct procedure for keeping an industrial patient's financial and health records when the same physician is also seeing the patient as a private patient?

A) The same financial record may be used, but a separate health record must be maintained.
B) The same health record may be used, but a separate financial record must be maintained.
C) The same financial and health records may be used.
D) Separate financial and health records must be used.