The Frequency at Which a Single Neuron Can "Fire" Action

Multiple Choice

The frequency at which a single neuron can "fire" action potentials is limited by the

A) closure of the Na⁺ channel inactivation gates.
B) number of leak channels the neuron has.
C) number of synapses formed by the neuron.
D) time it takes for the voltage-gated Na⁺ channels to reopen.
E) speed at which Cl^‒ ion channels can close.