Which of these would be true concerning mitochondria and nerve cells?

A) free-floating mitochondria in the blood plasma creates the energy needed for the neurons
B) mitochondria are not found in nerve cells as nerves use a different type of energy than ATP to function
C) all of the ATP for nerve cells is transported to from the mitochondria in other cells directly to the nerve cells
D) due to the high energy demand of neurons, the mitochondria help produce large amounts of ATP are needed for neurotransmission