What Is the Best Description of a Nerve

Multiple Choice

What is the best description of a nerve?  

A) A bundle of sensory, motor, or both types of nerve fibers outside the central nervous system
B) A single extension of a neuron
C) The same as a neuron but found only within the central nervous system
D) A collection of nerve cell bodies outside the central nervous system
E) A set of sensory cells only found in the autonomic nervous system