This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: National Immunization Schedule 2020-21, Subject name: Social & Preventive Medicine
The strain used in Mumps vaccine is 
Select and explain. 
A. Jeryl Lynn, B. Edmonston Zagreb, C. RA 27/3, D. Oka
A: Jeryl Lynn
Answer: A: Jeryl Lynn 
Explanation: The various strains used for Mumps include Jeryl-Lynn, RIT-4385, Leningrad-3, L-Zagreb and Urabe strains.