Which of the following pairs is not correctly matched?
| Author | Book |
| 1. William C. Olson | The Growth of a Discipline |
| 2. G. F. Kennan | American Diplomacy |
| 3. Russel H. Fifield | The Introductory Course in International Relations |
| 4. Robert Strausz-Hupe and Stefan Possony | International Relations : A General Theory |
A. 1
B. 2
C. 3
D. 4
Answer: Option D

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