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': 'Pt with complains of dysphagia can take liquid only and history of smoking and weight loss \nSelect and explain. \nA. Achalasia cardia, B. Barrets esophagus, C. Carcinoma esophagus, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Answer- C. Carcinoma esophagus History of smoking - A risk factor for esophageal carcinoma.Dysphagia for solid food (as patient can take only liquid) - Symptom of carcinoma esophagusDysphagia more for solid than liquids occurs in :carcinoma esophagusStrictures and webs', 'role': 'assistant'}]