Which one of the following statements in regard to the excretion by the human kidneys is correct?

Q. Which one of the following statements in regard to the excretion by the human kidneys is correct?

A.            Ascending limb of Loop of Henle is impermeable to electrolytes

B.            Descending limb of Loop of Henle is impermeable to water

C.            Distal convoluted tubule is incapable of reabsorbing HCO3

D.            Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules

Answer: Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules