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': 'Extent of esophagus is ? \nSelect and explain. \nA. C3 - C6, B. C6 - TH, C. T10 -T12, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., C6-T11 Organ/Structure Larynx", 'role': 'assistant'}]