Match the following.

List-I	List-II
a. Ludwig	1. Comparative politics movement
b. Marx	2. Common analytical categories
c. Macridis	3. To be sought in political economy
d. Coleman	4. System is a set of elements

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

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

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

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

Answer: Option B