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': 'True regarding SA-14-14-2 Japanese Encephalitis vaccine - \nSelect and explain. \nA. Cell culture derived live attenuated, B. Killed vaccine, C. Life long immunity, D. Primary schedule consist of 2 doses', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Cell culture derived live attenuated", 'role': 'assistant'}]