Which of the following is FALSE regarding the membrane potential?

A) The resting membrane potential is determined mainly by the concentration gradients and differential permeability of the plasma membrane to K+ and Na+ ions.
B) In their resting state, all body cells exhibit a resting membrane potential.
C) The resting membrane potential occurs due to active transport of ions across the membrane due to the sodium-potassium pump.
D) The resting membrane potential is maintained solely by passive transport processes.