This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Occupational Health, Subject name: Social & Preventive Medicine
Most common heavy metal poisoning in industrial workers in - 
Select and explain. 
A. Lead, B. Arsenic, C. Mercury, D. Cadmium
A: Lead
Answer: A: Lead 
Explanation: Ans. is 'a' i.e., Lead * More idustrial workers are exposed to lead than any other toxic metal.