Which of the Following Statements Is NOT Correct

Multiple Choice

Which of the following statements is NOT correct?

A) Positive statements can best be tested by exposing them to empirical evidence.
B) Economic predictions cannot be tested because human decisions involve free will.
C) An economic model can be useful even if its underlying assumptions are unrealistic.
D) Economists test their theories by confronting the predictions of their theories with the evidence drawn from the real world.
E) Normative statements cannot be tested by the scientific method.