Which of the Following Represents an Effective Mechanism Through Which

Which of the following represents an effective mechanism through which an organization's culture could be changed to become more open and less tolerant of workplace bullying?

A) The firm's executives and senior managers publicly stand behind any initiative and model the behavior they wish for their employees to follow.
B) The firm should attempt to root out and fire any perpetrators of or contributors to a culture promoting workplace bullying.
C) The firm should consider bringing in a specialist firm to investigate any and all occurrences of workplace bullying and follow all recommendations the firm makes.
D) The firm should consider reassigning staff roles and positions so individuals are less familiar with each other and subsequently less conversant.