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': 'Which of the following are risk factors for Angiosarcoma \nSelect and explain. \nA. Polyvinylchloride, B. Arsenic, C. Thorotrast, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Option A, B, C are all risk factors for Angiosarcoma.', 'role': 'assistant'}]