This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology, Subject name: Forensic Medicine
[{'content': 'Velvety appearance of stomach is seen in poisoning with:(1995) \nSelect and explain. \nA. Abrus precatorius, B. Barbiturates, C. Arsenic, D. lead', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans: cRef: Parikh, 6th ed, p. 9.10 and 5th ed, p. 748', 'role': 'assistant'}]