A – Animal husbandry has developed on a commercial basis in North America and Australia.
R – In North and South America animal husbandry is carried out with the help of advanced technology on a commercial basis.
(a) Only A is correct.
(b) Only R is correct.
(c) Both A and R are correct and R is the correct explanation of A.
(d) Both A and R are correct but R is not the correct explanation of A.
