Which of the Following Is a Key Difference Between the "Public

Which of the following is a key difference between the "public sphere model" and "market model" of political communication and the media?

A) In the "market model" the needs of the media shape politics
B) In the "market model", what is deemed as important for the people to know is determined by political actors and institutions rather than the media
C) In the "political sphere model", media has an obligation to aid democracy
D) In the "market model", media's only obligation is towards what the audience needs and wants