Buffers Are Substances That Assist Cells and Organisms to Resist

Buffers are substances that assist cells and organisms to resist changes in pH by

A) accepting H⁺ ions as pH rises and releasing H⁺ ions as pH falls.
B) accepting OH^- ions as pH rises and releasing H⁺ ions as pH falls.
C) accepting H⁺ ions as pH falls and releasing H⁺ ions as pH rises.
D) accepting OH^- ions as pH falls and releasing H⁺ ions as pH rises.
E) accepting OH^- ions as pH falls and releasing OH^- ions as pH rises.