Which of the following points are important for successful bee-keepinf?
(i) Knowledge of the nature and habits of bees.
(ii) Selection of suitable location for keeping the beehives.
(iii) Management of beehives different seasons.
(iv) Cross hybridisation among the selected parents.
A. (i),(iii) and (iv)
B. (ii) and (iv)
C. (i), (ii) and (iii)
D. (i) and (iii)