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

List-I	List-II
a. Kant	1. The ideal self is the source of moral obligation.
b. TH Green	2. God is the source of moral obligation.
c. Martineau	3. The ultimate source of all morality and ground of obligation is the pain, attendant on the violation of duty.
d. JS Mill	4. Practical reason is the true source of moral obligation

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

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

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

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

Answer: Option A