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: Radiology
[{'content': 'Radium paint causes: \nSelect and explain. \nA. Squamous cell carcinoma, B. Osteogenic sarcoma, C. Rodent ulcer, D. Adenocarcinoma stomach', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Osteogenic sarcoma', 'role': 'assistant'}]