Which of the Following Is Not a Correct Statement as a General

Which of the following is not a correct statement as a general rule involving the protection of proprietary information?

A) As a class, employees are the largest group of persons bound to secrecy because of their status or relationship
B) By operation of common law, employees are presumed to be fiduciaries to an extent that they may not disclose secrets of their employers without authorization
C) Other than the employees, any other persons to be bound to secrecy must agree to be so bound
D) Any agreements to be bound must always be in writing and are not implied from acts