Which of the Following Is Not a Reason to Study

Which of the following is not a reason to study economics?

A) To learn how people allocate scarce resources to produce goods.
B) To learn how to trade off quantities of goods for quality of life.
C) To learn a systematic model of economic principles for comprehending reality.
D) To learn to avoid the fallacy of composition in analyses of public policy.
E) All of the above are valid reasons for studying economics.