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

List-I	List-II
a. Air is the fundamental source of the universe	1. Empedocles
b. Number is the fundamental source of the universe	2. Aristotle
c. The doctrine of four elements	3. Pythagoras
d. God is unmoved mover	4. Anaximenes

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

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

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

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

Answer: Option B