All of the Following Are Reasons Action Potentials Are Similar

Multiple Choice

All of the following are reasons action potentials are similar to toilet flushes except:

A) Pushing the toilet lever harder does not produce a bigger flush, just like pushing a neuron beyond threshold does not increase the size of the action potential.
B) Like after a flush, it takes a while before the neuron can fire again.
C) Like the flush, the action potential travels in only one direction.
D) Like the toilet outflow goes to a single sewer line, the action potential impacts only the next neuron in line.