Mark the incorrect statement w.rt counter current mechanism.

Options

A. Osmolarity of filtrate increases while moving down the descending limb of loop of Henle
B. There will be no urine formation if loop of Henle is absent in mammalian nephrons
C. NaCl and urea maintain the osmolarity gradient in medulla
D. Osmolarity of fluid moving out from the collecting duct is four times that of plasma

Answer

C