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: ENT
[{'content': 'During the ear examination, cough occurs due to stimulation of \nSelect and explain. \nA. Hypoglossal, B. Trochlear, C. Trigeminal, D. Vagus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Arnold\xa0nerve. It is\xa0an auricular branch of jugular ganglion of the\xa0vagus.\xa0\nIt supplies the skin of\xa0posterior part of pinna on the medial surface of the concha, and posterior wall of the external auditory canal and tympanic membrane.\nThe auricular nerve is the afferent limb of the Ear-Cough or Arnold Reflex.', 'role': 'assistant'}]