Choose the correct statement regarding the biomagnifications of DDT in an aquatic food chain. I....

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Choose the correct statement regarding the biomagnifications of DDT in an aquatic food chain.
I. Biomagnification is seen only up the trophic level and sometimes the lower levels have higher concentrations of toxicant.
II. High concentrations of DDT disturbs calcium metabolism in birds, causing thinning of egg shell and premature breaking.
III. Carnivorous fish have more concentration of DDT than the water itself and are consumed by humans.
Choose the option containing correct statements.
(a) I and II
(b) I and III
(c) II and III
(d) I, II and III
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