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': 'Anti rabies vaccine is prepared from- \nSelect and explain. \nA. Wild virus, B. Live attenuated virus, C. Street virus, D. Fixed virus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]