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: Anatomy
[{'content': 'Eustachian tube opens - \nSelect and explain. \nA. Above superior turbinate, B. Behind posterior end of inferior trubinate, C. Anterior to inferior turbinate, D. Between superior and middle trubinate', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Pharyngeal opening of Eustachian tube is situated 1.25 cm behind the posterior end of inferior turbinateQ.', 'role': 'assistant'}]