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': 'MMR (Measles, mumps, rubella) vaccine is an example of: \nSelect and explain. \nA. Live attenuated vaccine, B. Conjugated vaccine, C. Polysaccharide vaccine, D. Killed vaccine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans: a. Live attenuated.. LIVE ATTENUATEDKILLED WHOLE ORGANISMTOXOID PROTEINSPOLYSACCHARIDEGLYCOCONJUGATERCOMBINANTBCG, Yellow fever, OPV, Measles, Mumps, Rubella,Typhoid, Varicella,Rotavirus, Cholera,Cold-adapted influenza,Rotavirus reassoants.ZostTyphoid, Cholera, Plague,Peussis, Influenza,Typhus, lPV, Rabies, JE,Tickborne encephalitis, HAVDiphtheria, Tetanus,Acellular peussis,Anthrax, InfluenzasubunitPneumococcus,Meningococcus,Hib, Typhoid(Vi)Hib, Pneumococ-cus,MenACWY(Meningococcus)HBV Lymedisease, CholeraToxin B, HPV', 'role': 'assistant'}]