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
[{'content': 'Acrodynia is associated with \nSelect and explain. \nA. Mercury (Hg), B. Phenolic acid, C. Oxalic acid, D. Carbolic acid poisoning', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Mercury', 'role': 'assistant'}]