A 35-year-old male John Doe has been injured in a motorcycle accident. When paramedics reach him they see no outer indication of injury, but he is not moving, his helmet is dented, and his breathing is decreased by 75%. He does not respond to numerous prompts. From the answers below, what is the best possibility for injury?
A. Nerves in the lumbar plexus have been damaged.
B. Nerves to his brachial plexus have been damaged.
C. Nerves in his cervical plexus have been damaged.
D. Nerves in his sacral plexus have been damaged.