"An Objective of Firms Is to Maximize Profits

Multiple Choice

"An objective of firms is to maximize profits". This statement

A) is a normative statement and thus cannot be tested.
B) is an unrealistic assumption, and therefore of little use to economists.
C) has been proven by empirical testing to be always true.
D) applies only to corporations.
E) is an assumption used by economists to predict the behaviour of firms.