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: Social & Preventive Medicine
Most heat sensitive vaccine is 
Select and explain. 
A. Polio, B. BCG, C. Measles, D. DPT
A: Polio
Answer: A: Polio 
Explanation: Most Thermolabile vaccine: Reconstituted BCG
Most Thermostable vaccine: TT