This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
[{'content': 'During ear examination, cough occurs due to stimulation of - \nSelect and explain. \nA. Vagus, B. Trigeminal, C. Hypoglossal, D. Trochlear', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is \'a\' i.e., Vagus "Irritation of the auricular branch of the vagus in the external ear may reflexly cause cough, vomitting.or even death due to sudden cardiac inhibition. " - BDCo Auricular branch of the vagus nerve is also known as Alderman\'s nerve.', 'role': 'assistant'}]