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
For which of the following are live vaccines used - 
Select and explain. 
A. Measles, B. Cholera, C. Small pox, D. Oral Polio
A: Measles
Answer: A: Measles 
Explanation: live attenuated vaccines used for prophylaxis of measels REF:ANATHANARAYANAN MICROBIOLOGY NINTH EDITION PAGE.514