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
Mercury pollution is caused by all, except: LIPSC 14 
Select and explain. 
A. Compact fluorescent lamp, B. Incandescent bulb, C. LED bulb, D. Fluorescent lamp
C: LED bulb
Answer: C: LED bulb 
Explanation: Ans. LED bulb