Thara's Roommate Has Been Complaining About Having a "Pinched Nerve

Thara's roommate has been complaining about having a "pinched nerve" from moving some furniture. What is she likely referring to as a nerve?

A) a single axon from a portion of her back to her spinal cord
B) a neuron that is part of her spinal cord
C) a bundle of axons from some nerves in her back
D) a neuron that connects to the pain centre in her spine