Several Companies,such as AT&T,General Foods,and Colgate-Palmolive,have Their Own Codes of Behavior

Several companies,such as AT&T,General Foods,and Colgate-Palmolive,have their own codes of behavior and criteria that determine whether advertisements are acceptable.Which type of self-regulation is this?

A) industry self-regulation
B) self-discipline
C) self-regulation by public groups
D) personal ethics
E) social ethics