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': "Most common site of rupture of esophagus during rigid esophagoscopy is at \nSelect and explain. \nA. Above cricopharynx, B. Near vocal cord, C. GE junction, D. At killian's dehiscence", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Complications of Rigid esophagoscopv Injury to lips and teeth. Injury to arytenoids. Injury to pharyngeal mucosa. Perforation of esophagus; most often it occurs at the site of killians dehiscence (near the cricopharyngeal sphincter). Compression of trachea.', 'role': 'assistant'}]