Match List-I with List-II and select the correct answer:

List I (Thinker)	List II (Conflict)
a. Durkheim	1. As pathological
b. Marx	2. As essential and complementary aspect of harmony
c. Simmel	3. As vehicle of social change
d. Ibne Khaldun	4. Fundamental to the evolution of civilisation

A. a-1, b-3, c-2, d-4

B. a-4, b-3, c-2, d-1

C. a-4, b-1, c-2, d-3

D. a-1, b-4, c-2, d-3

Answer: Option D