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
A patient presented with Aldrich-Mee's lines which are characteristic of which heavy metal poisoning? 
Select and explain. 
A. Lead, B. Mercury, C. Arsenic, D. Copper
C: Arsenic
Answer: C: Arsenic 
Explanation: Aldrich-Mee's lines: Hyperkeratosis of the palms and soles with irregular thickening of the nails and development of bands of opacity in the fingernails. It is seen in prolonged contact of Arsenic. Ref: The essentials of forensic medicine and toxicology by Narayan Reddy, 27th edition, Page 475