Which of the Following Is Not Correct? Myelin

Multiple Choice

Which of the following is not correct? Myelin:

A) Is responsible for almost half of the brain's volume
B) Fails to grow beyond infancy, and is thus involved in the synaptic pruning process
C) Is the insulating layer that covers the axons of neurons to increase the neuron's efficiency
D) Provides a track along which the regrowth of certain fibres is possible and is thus involved in the process of nerve regeneration