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
Arsenic causes all, except: WB 09 
Select and explain. 
A. Raindrop pigmentation, B. Alopecia, C. Palmar hyperkeratosis, D. Blue line in gums
D: Blue line in gums
Answer: D: Blue line in gums 
Explanation: Ans. Blue line in gums