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
Which metal poisoning can be detected analysing bone - 
Select and explain. 
A. Arsenic, B. Nickel, C. Chromium, D. Lead
A: Arsenic
Answer: A: Arsenic 
Explanation: Metals detected in bones, hair, nails → Arsenic, antimony, radium, and thallium.