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: Pathology
[{'content': 'Smoking is a causative factor for all the carcinomas, except: \nSelect and explain. \nA. Esophageal carcinoma, B. Laryngeal carcinoma, C. Nasopharyngeal carcinoma, D. Urinary bladder carcinoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: . Nasopharyngeal carcinoma', 'role': 'assistant'}]