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': 'Encephalopathy can occur as complication of which vaccine ? \nSelect and explain. \nA. OPV, B. Rubella, C. Measles, D. BCG', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Measles", 'role': 'assistant'}]