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: Forensic Medicine
Most impoant and potential agent that can be used in bioterrorism: Al 11 
Select and explain. 
A. Plague, B. Smallpox, C. Tuberculosis, D. C. botulinum
B: Smallpox
Answer: B: Smallpox 
Explanation: Ans. Smallpox