This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 2, Subject name: Forensic Medicine
[{'content': "Which poisoning causes 'Swift Feer disease'? \nSelect and explain. \nA. Arsenic, B. Mercury, C. Copper, D. Lead", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Acrodynia (Pink Disease)/ Swift Feer disease: Due to chronic mercury poisoning Toxicity: Idiosyncratic hypersensitivity reaction Due to mercurous chloride(calomel) Age group: Children Features: Pink discolouration in the hands and feet Pink, Puffy, Painful & Paraesthetic Peripheries', 'role': 'assistant'}]