Kidneys Maintain Acid-Base Balance in the Body by

Kidneys maintain acid-base balance in the body by

A) removing hydrogen ions from all the sources in the body.
B) excreting bicarbonate ions rapidly when acidity of body fluid decreases.
C) secreting ammonia into the urine.
D) removing hydrogen ions and secreting ammonia into the urine.
E) removing hydrogen ions, secreting ammonia into the urine, and excreting bicarbonate ions when body fluid acidity decreases.