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 attenuated vaccine, B. Killed vaccine, C. Toxoid, D. Immunosuppressant agent', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a (Live attenuated vaccine). (Ref. Park, PSM, 17th ed., 148)VACCINESLive attenuated vaccinesInactivated or killed vaccines1.BCG1.Typhoid2.Typhoid oral2.Cholera3.Plague3.Pertussis4.Mumps4.C.S. Meningitis5.Measles5.Plague6.Rubella6.Rabies7.Yellow fever7.Influenza8.OPV8.KFD vaccine9.Influenza9.Salk (Polio)10.Epi. typhus10.Hepatitis B 11.Japanese Encephalitis', 'role': 'assistant'}]