This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
[{'content': 'Which cranial nerve carries parasympathetic fibers? \nSelect and explain. \nA. Vagus nerve, B. Trigeminal nerve, C. Hypoglossal nerve, D. Abducent nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. Vagus nerveThe only cranial nerves that transmit parasympathetic fibers are the oculomotor, facial, glossopharyngeal, and vagus nerves.Parasympathetic flow is cranio-sacral flow carried by cranial nerves: 3,7,9,10 and the sacral nerves: S-2,3,4. These nerves carry the preganglionic fibres to their respective ganglia.', 'role': 'assistant'}]