【单选题】

Which of the following might serve as the most appropriate title for the passage
A．(A) Small Groups and Governments, A Comparison of Two Economic Methods

B．(B) Social Obligation and the Consumer: A Case Study
C．(C) Regular vs. Irregular Systems in Economics
D．(D) The Comparative Strength of Economics in Various Areas
E．(E) The Triumph of Analysis in Economic Theory