A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true and R is NOT the correct explanation of A
C. A is true but R is false
Feedback Milk production in India is low as compared to other countries of the world because of lack of good breed and improper feed. But here rearers is the different thing. So, R is False.
D. A is false but R is true