What Is One of the Major Consequences of V

What is one of the major consequences of V. O. Key Jr.'s definition of public opinion?

A) Political actors must follow public opinion without any question.
B) Every government, democratic or otherwise, has to pay attention to public opinion in some fashion.
C) Only democratic governments have to pay attention to public opinion since elections are essential.
D) Those who have the power to move public opinion are the most important actors in the political system.