Study the given food chain below.
Grass → Insects → Frog → Snake → Eagle
The population of snake will increase if,
(i) The population of eagle decreases.
(ii) The population of frog increases.
(iii) The population of eagle increases.
(iv) The population of frog decreases.
A(i) and (iv)
B(ii) and (iii)
C(i) and (ii)
D(iii) and (iv)