Which of the Following Is True of Business Ethics

Which of the following is true of business ethics?

A) Certain notions such as fairness, honesty, and reciprocity are universal norms.
B) Business ethics is an agreed-upon code of conduct in business, based on laws.
C) The perception of what is ethical and what is not is similar across different cultures.
D) Business ethics needs to be codified into law in order to be followed.