Refer to the given flow chart showing flow of energy in a food chain.
Select the incorrect statements regarding L, M, N and O.
(i) O helps in cleaning of environment as well as recycling of nutrients.
(ii) The role of M comes when plants and animals die.
(iii) L operates at all levels of food chain.
(iv) N eats other animals and gets its food indirectly from L.
A(i) and (iv) only
B(i), (iii) and (iv) only
C(ii) and (iii) only
D(i), (ii), (iii) and (iv)