This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
Which of the following is a vesicant 
Select and explain. 
A. Lewisite, B. Sarin, C. Chlorine, D. Chloracetophenone
A: Lewisite
Answer: A: Lewisite 
Explanation: Lewisite - VESICANT Sarin- NERVE GAS Chlorine - ASPHYXIANT Chloracetophenone - TEAR GAS