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
Hepatitis B Vaccine is 
Select and explain. 
A. Live attenerated vaccine, B. Killed vaccine, C. Toxoid, D. None of the above
B: Killed vaccine
Answer: B: Killed vaccine 
Explanation: None