This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Which of the following nerve provides motor supply to the diaphragm? 
Select and explain. 
A. Phrenic nerve, B. Intercostal nerves, C. Thoracodorsal nerve, D. Sympathetic nerves
A: Phrenic nerve
Answer: A: Phrenic nerve 
Explanation: Motor supply of the diaphragm on each side is by the phrenic nerve (C3, 4, 5). Sensory innervation of the central pleura on the upper surface of the diaphragm and the peritoneum on the lower surface is by phrenic nerve.Sensory innervation of the peripheral pas of the pleura and and peritoneum covering the peripheral areas of the upper and lower surfaces of the diaphragm is from the lower six thoracic nerves.Phrenic nerve arises in the neck from the third, fouh and fifth cervical nerves of the cervical plexus. It also sends branches to the pericardium, the mediastinal pleura, and the pleura and peritoneum covering the upper and lower surfaces of the central pa of the diaphragm. Ref: Clinical anatomy for Medical Students By Richard S Snell, 6th Edition, Pages 55-6 ; B.D.Chaurasia's Human Anatomy, 5th Edition, Volume 2, Pages 337-338