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
BAL is useful in treating poisoning due to all except? 
Select and explain. 
A. Lead, B. Organic mercury, C. Cadmium, D. Arsenic
C: Cadmium
Answer: C: Cadmium 
Explanation: BAL (dimercaprol) is contraindicatcd in iron and cadmium poisoning. 
 It is used in lead (as adjuvant), mercury and arsenic poisoning.