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': 'Hepatitis A vaccine available ? \nSelect and explain. \nA. Live attenuated, B. Killed (Inactivated), C. Both live and inactivated, D. Subunit vaccine', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Both live and inactivated Two types of hepatitis A vaccines are used :- Formaldehyde inactivated vaccine Live attenuated vaccine", 'role': 'assistant'}]