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: Microbiology
Cell-Fraction derived vaccine is - 
Select and explain. 
A. Hepatitis-B, B. Measles, C. Mumps, D. Rubella
A: Hepatitis-B
Answer: A: Hepatitis-B 
Explanation: Ans. is 'a' i.e., Hepatitis B