Teresa: If their goal is to maximize profits, film studios should concentrate on producing bigbudget films rather than small-budget ones. For, unlike big-budget films, small-budget films never attract mass audiences. While small-budget films are less expensive to produce and, hence, involve less risk of unprofitability than big-budget films, low production costs do not guarantee the highest possible profits. Which one of the following is an assumption required by Teresa's argument?
A: A film studio will not maximize its profits unless at least some of its films attract mass audiences.
B: A film studio's primary goal should be to maximize profits.
C: It is impossible to produce a big-budget film in a financially efficient manner.
D: Each big-budget film is guaranteed to attract a mass audience.
Choose A, B, C or D as your solution.
A