This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Communicable Diseases, Subject name: Social & Preventive Medicine
[{'content': 'BCG is - \nSelect and explain. \nA. Live vaccine, B. Killed vaccine, C. Toxoid, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Live vaccine Live'attenuated' vaccinesKilled 'inactivated' vaccinesBCGPertussisOPV (Sabin - Oral polio vaccine)IPV (Salk - Inactivated polio vaccine)Measles vaccineRabies vaccineMumps vaccineCholera vaccineRubella vaccineMeningococcal vaccineYellow fever vaccineHepatitis B vaccineTyphoralTyphim - Vi vaccineHepatitis - AHepatitis - A", 'role': 'assistant'}]