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: Medicine
[{'content': 'The MOST frequent cancer associated with asbestos exposure? \nSelect and explain. \nA. Lung cancer, B. Pleural mesothelioma, C. Peritoneal mesothelioma, D. Adenocarcinoma esophagus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lung cancer is the most frequent cancer associated with asbestos exposure mesothelioma both pleural and peritoneal is associated with asbestos exposure. Ref:Harrisons Principles of Internal Medicine, 18th Edition, Page 2123', 'role': 'assistant'}]