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': 'Which nerve is responsible for the referred pain of the ear \nSelect and explain. \nA. III Nerve, B. IX Nerve, C. XI Nerve, D. XII Nerve', 'role': 'user'}, {'content': 'Answer: B \nExplanation: As ear receives nerve supply from 5th (auriculotemporal branch), 9th (tympanic branch),10th (auricular branch) cranial nerves and from c2 (lesser occipital) and c3(greater auricular), pain may be referred from these remote areas.', 'role': 'assistant'}]