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: Microbiology
[{'content': "Vaccine prepared by embryonated Hen's egg are \nSelect and explain. \nA. Measles, B. Rabies, C. Rubella, D. Varicella", 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Rabies . Vaccines prepared in embrvonated Hen's ettg : - Influenza (grown in allantoic cavity) - Rabies - Yellow fever - Mumps . Vaccines from Duck eeg - Non neural rabies vaccine", 'role': 'assistant'}]