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 to reabsorbing `HCO_(3)^(-)`
D. Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules
