What Statement Does NOT Describe the Methods by Which Chemical

What statement does NOT describe the methods by which chemical buffer systems operate to maintain pH?

A) When a strong base is added to a solution,the buffer system's weak acid releases its hydrogen ions to bind the base ions.
B) When a strong acid is added to a solution,the weak base of the buffer system binds the released hydrogen ions and removes them from solution.
C) All excess hydrogen ions are removed from the body in the urine.
D) Buffer systems consist of a weak acid and its conjugate weak base which function to resist large swings in pH.