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: Surgery
[{'content': "Esophageal carcinoma is not  predisposed by \nSelect and explain. \nA. Achalasia, B. Scleroderma, C. Corrosive intake, D. barrett's oesophagus", 'role': 'user'}, {'content': "Answer: B \nExplanation: common predispositions in developing carcinoma oesophagus includes,\n*human papillomavirus infection\n*achalasia cardia (30%)\n*oesophageal webs (25%)\n*Barrett's oesophagus and also Plummer Vinson syndrome, tylosis, corrosive strictures, and nitrosamines.", 'role': 'assistant'}]