Which of the Following Events Is NOT a Characteristic of an Action

Multiple Choice

Which of the following events is NOT a characteristic of an action potential?

A) The plasma membrane becomes highly permeable to Na⁺ and depolarization results.
B) As Na⁺ enter, the inside of the plasma membrane becomes more negative.
C) At the peak of depolarization, Na⁺ channels begin to close and K⁺ channels open.
D) In repolarization, K⁺ flow out of the cell.
E) Action potentials occur according to the all-or-none principle.