This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Oesophagus, Subject name: Surgery
[{'content': 'Food can get stuck in the esophagus at the following locations, except: \nSelect and explain. \nA. Crossing of left bronchus, B. Crossing of arch of aorta, C. Diaphragmatic opening, D. Crossing of the hemiazygous vein', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. (d) Crossing of hemiazygous veinRef: Bailey and Love 26th Edition, Page 987Natural constrictions of esophagus are at:* 15cm-- Incisor teeth* 25cm--Arch of aorta* 27cm--Left Bronchus* 40cm--Diaphragmatic aperture', 'role': 'assistant'}]