Which of the Following Statements About the Action Potential Is

Which of the following statements about the action potential is false?

A) The rapid depolarization phase is caused by the entry of potassium ions.
B) During the repolarization phase, sodium channels close and potassium channels open.
C) In the after- hyperpolarization phase, membrane potential approaches the potassium equilibrium potential.
D) During the depolarization phase, membrane potential becomes positive.
E) None of these statements is false-all are true.