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': 'Red velvety appearance of stomach is seen in the poisoning of \nSelect and explain. \nA. Lead, B. Arsenic, C. Copper, D. Mercury', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Black foot disease :\n\nChronic exposure of arsenic causef varosparm and peripheral varcular infufficiency.\nDry gangrene and spotaneous amputations of affected extremitier.\nRed velvety stomach mucosa(Strawberry stomach) arsenic poisonig.\nBlue linking on gems - lead(Bustonian line).\nTremors\xa0 - Mercury(intertional tremors).\nAnemia - lead(microcytic hypochromic anemia).', 'role': 'assistant'}]