I believe it is C. Medulla
I hope this helps you :)
Sorry if i was wrong
It decreases and the decrease in the energy level appear as a kinetic energy of the charge
It's the speeding of an object given in a specific direction.
Average Velocity = displacement / time
(<span>Remember that in physics, a change in position from its starting point to its end point is an object's displacement)
Hope this Helps :)</span>
