Assertion: A few toxic substances often present in industrial water can undergo biological magnification.
Reason: Toxic substances accumulated by an organism can not be metabolised or excreted.
A. If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
B. If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion
C. If Assertion is True but the Reason if False.
D. If both Assertion `&` Reason are false.