"All-Or-None" Is the Principle Stating That

Multiple Choice

"All-or-none" is the principle stating that

A) a neuron always fires at the same strength.
B) the potential inside a neuron must increase from 0mV to +100mV to initiate an action potential.
C) all dendrites on a neuron must be receiving depolarizing signals in order to initiate an action potential.
D) during the refractory period a neuron will not fire.