Regarding an Action Potential, Which of the Following Is False

Regarding an action potential, which of the following is false?

A) When an action potential occurs, neurotransmitters are released from the terminal buttons.
B) An action potential results in communication between neurons
C) For an action potential to occur, there has to a rapid inflow of Na+ into the neuron and a rapid outflow of K+ from the neuron.
D) Only a and b are true.
E) All of the above are true.