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
Erethism occur in - 
Select and explain. 
A. Hg, B. As, C. Pb, D. Cu
A: Hg
Answer: A: Hg 
Explanation: Erethism is seen in mercury poisoning.