Which Statement Below Best Describes Why Action Potentials Travel in Only

Multiple Choice

Which statement below best describes why action potentials travel in only one direction?

A) They have a refractory period.
B) The all- or- none principle explains this.
C) They have myelinated axons.
D) The diameter of the axon explains this.
E) Only sodium- and potassium- gated channels are found on the axon.