During the Depolarization Phase of a Neuronal Action Potential, ______

During the depolarization phase of a neuronal action potential, ______.

A) the Na⁺-K⁺ ATPase is turned off
B) there is an increase in sodium influx through ion channels
C) there is an increase in the amount of ion exchange by the Na⁺-K⁺ ATPase
D) there is decreased efflux of potassium through ion channels