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 $HCO_3^-$
  • D
    Nearly $99$ percent of the glomerular filtrate is reabsorbed by the renal tubules

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