Which of the Following Statements Is Not True of Psychological

Which of the following statements is not true of psychological contracts?

A) Small business owners often implicitly or explicitly communicate conflicting terms when making psychological contracts.
B) To avoid breaking a psychological contract,denote strict limits on what you promise employees.
C) Putting a psychological contract in writing is unnecessary and ill-advised.
D) A psychological contract refers to an employees' beliefs about the promises between the employee and the company.