Leaders for a firm $($ CEOs $/$ top management $)$ ?can have what type of impact on the ethics of a firm?

?

The CEO $$ s ethics has little influence over the majority of employees due to the power distance

?

Ethics are a characteristic that is hard to change and CEOs should be chosen that fit within the ethical culture present in the firm.

?

The firm $$ s leader is a role model that can represent the ethics that are expected from other employees in the firm

?

All of the above