Which One of the Following Statements Is a Potentially Effective

Which one of the following statements is a potentially effective way for a firm to handle a conflict of interest?

A) to examine its core values and belief systems and decide with whom to do business in alignment with those values and beliefs
B) to only do business with customers and vendors who have been thoroughly vetted by the firm's human resources function
C) to dismiss any employees who voice any opposing or dissenting opinions
D) to only allow executives and top managers to make decisions involving conflicts of interest