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': 'NOT True about otosclerosis \nSelect and explain. \nA. Females more common than males, B. Leads to Unilateral deafness, C. Tympanic membrane is Normal, D. Occurs at Oval window', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It is Bilateral condition.', 'role': 'assistant'}]