This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumours of Nose and Paranasal Sinuses, Subject name: ENT
[{'content': "Trotter's triad includes all except: \nSelect and explain. \nA. Sensory disturbance over distribution of 5th cranial nerve, B. Diplopia, C. Conductive deafness, D. Palatal palsy", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nasopharyngeal cancer can cause conductive deafness (eustachian tube blockage,) ipsilateral temporoparietal neuralgia (involvement of CN V) and palatal paralysis (CN X) collectively called Trotters triad.', 'role': 'assistant'}]