31. Which of the following description of membrane potential is false?
(A) Resting potential in neurons means when membrane potential became 0 mV.
(B) Postsynaptic potentials are graded, and action potentials are all-or-none.
(C) Hypetpolarization means membrane potential became more negative.
(D) Under physiological condition, Na⁺ ions entering cells will cause depolarization.
(E) Membrane potential is the result of differential ion concentration across plasma membrane of die cell.

以下哪一個對膜電位的描述是錯誤的？ ...