This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
Edmonston strain is - 
Select and explain. 
A. Hepatitis-B, B. Measles, C. Mumps, D. Rubella
B: Measles
Answer: B: Measles 
Explanation: In measels, active immunization is by vaccine used Edmonston strain REF:<\p> MICROBIOLOGY ANANTHA NARAYANAN NINTH EDITION PAGE.513