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