This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Poisoning, Subject name: Forensic Medicine
[{'content': 'Alopecia is commonly seen in poisoning by \nSelect and explain. \nA. Copper, B. Mercury, C. Iodine, D. Thallium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Thallium may interfere with riboflavin homeostasis leading to dermatitis, alopecia, and neuropathy. Alopecia may also be seen in arsenic and lead poisoning Ref - Krishan Vij textbook of forensic medicine and toxicology 5e pg: 473', 'role': 'assistant'}]