A farmer is growing a crop regularly in his field. He uses chemical fertilizers, pesticides, organic manure as well as bio-fertilizers. Very close to his field is a factory which emits smoke as a byproduct. There is also a huge lake in the nearby area. (b) Consider the following food chain in the same lake. Aquatic plant → Small fish → Big fish → Birds Which of the above organisms is likely to show minimum amount of pesticide concentration in them after considerable time? (i) Aquatic plants (ii) Small fish (iii) Big fish (iv) Birds