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

List-I (Theories)	List-II (Scientists)
a. Population theory	1. Malthus
b. Theory of social change	2. E. Hagen
c. Spread effects	3. Myrdal
d. Theory of rent	4. Richardo

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

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

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

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

Answer: Option C