Which of the Following Represents a Robust Mechanism by Which

Which of the following represents a robust mechanism by which an organization may be able to curb workplace bullying?

A) The firm should consider drafting and promulgating a robust, comprehensive, and consistent set of policies and procedures that employees should be made to read and sign.
B) The firm should adopt a zero-tolerance policy for anyone accused of workplace bullying, with immediate termination being the consequence for any accusation.
C) The firm should clearly spell out protections afforded to perpetrators of workplace bullying.
D) The firm should make sure that sanctions and punishments for perpetrators vary widely depending on the severity of bullying and the perpetrator's position in the firm.