Which of the Following Possibly Restricts the Exercise of Management

Which of the following possibly restricts the exercise of management rights by the employer:

A) a requirement that rules must be established by the management only
B) a requirement that rules must be established by the union only
C) a requirement that rules established must be consistently enforced
D) a requirement that rules established be agreed to by the union
E) a requirement that rules must be established for particular interests to employers