This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunization, Subject name: Pediatrics
[{'content': 'Name of mumps vaccine is: \nSelect and explain. \nA. Jeryll Lynn, B. Edmonston, C. Danish 1331, D. OKA', 'role': 'user'}, {'content': "Answer: A \nExplanation: a. Jeryll Lynn(Ref: IAP 228, Nelson's 20/e p 1381, Ghai 8/e p 193-194)Mumps vaccine virus strains include Leningrad-Zagreb, Leningrad-3, Jeryl Lynn strains and are grown in chick embryo/human diploid cell cultures.", 'role': 'assistant'}]