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: Social & Preventive Medicine
[{'content': 'Occupational cancer involve following organs except- \nSelect and explain. \nA. Lung, B. Breast, C. Bladder, D. Liver', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Occupational cancers \n\nLung (most common) \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\nBladder\xa0\xa0\xa0\nLarynx\xa0\xa0\xa0\nMesothelioma\nLymphatic system\xa0\xa0\nPharynx\nLiver \xa0 \xa0\xa0\nHematopoietic system\xa0\xa0\xa0\nNasal cavity and sinuses\xa0\xa0\xa0\xa0\xa0\nSkin\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\nSoft tissue sarcoma', 'role': 'assistant'}]