Which One of the Following Steps Occurs During the Absolute

Multiple Choice

Which one of the following steps occurs during the absolute refractory period?

A) The neuron cannot generate an action potential.
B) Sodium channels open, releasing sodium ions into the neuron; potassium channels close.
C) Sodium and potassium channels open.
D) A nerve impulse is propagated.
E) Potassium channels open, releasing potassium ions from the neuron; sodium channels close.