【单选题】

Which of the following best describes the main purpose of the passage

A、To contrast the condition ofAfrican-American cinema with that of mainstream cinema
B、To provide an economic explanation for the unpopularity ofAfrican-American cinema
C、To criticize the assumptions mainstream audiences allegedly make towardAfrican-American cinema
D、To catalog the attitudes and practices responsible for the unpopularity ofAfrican-American cinema
E、To outline the fundamental problem inAfrican-American cinema and its most likely solution