This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': "The tympanic note on percussion in traube's space on chest wall is due to which underlying \nSelect and explain. \nA. Base of lung, B. Fundus of stomach, C. Left costo-diaphragmatic recess, D. Left sub phrenic space", 'role': 'user'}, {'content': "Answer: B \nExplanation: Tympanic note in traube's space on percussion is due to fundus of stomach . Ref - researchgate.net", 'role': 'assistant'}]