Match the principles with the instances:

a. Mapping of boundaries of religious grounds	1. Pakistan and Bangladesh
b. Mapping of boundaries on grounds of a different language	2. India and Pakistan
c. Demarcating boundaries within a country by geographical zones	3. Jharkhand and Chhattisgarh
d. Demarcating within a country on administrative and political grounds	4. Himachal Pradesh and Uttarakhand

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

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

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

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

Answer: Option A