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Assertion :- Human kidneys can produce u...

Assertion `:-` Human kidneys can produce urine nearly four times concentrated than the initial filtrate formed.
Reason `:-` Counter current mechanism helps to maintain a concentration gradient in the medullary interstitium.

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 is False.

D

If both Assertion & Reason are false.

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