This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Occupational Health, Subject name: Social & Preventive Medicine
[{'content': 'MC Occupational cancer is:- \nSelect and explain. \nA. Lung cancer, B. Skin cancer, C. Bladder cancer, D. Leukemias', 'role': 'user'}, {'content': 'Answer: B \nExplanation: M/C occupational cancer is skin cancer.(75%) Occupational cancers; Asbestos - Mesothelioma Arsenic - Ca of lung, liver & skin Benzene - leukemias N2, Aniline - Bladder Ca Ra, si ,Be, cd - Lung caner Cr, Nickle, wood dust - Nasal cancer PVC - Angiosarcoma of liver.', 'role': 'assistant'}]