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': 'A 58-year-old male presents with persistent fullness of left ear for 3 months and hearing loss. On examination, there is fluid behind the tympanic membrane. Impedance audiometry shows a type B audiogram. The next step for the management of the patient would be: \nSelect and explain. \nA. Myringotomy with grommet inseion, B. Endoscopic examination for any nasopharyngeal pathology, C. Valsalva manoeuvre, D. Antihistaminics', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. Endoscopic examination for any nasopharyngeal pathology', 'role': 'assistant'}]