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: Surgery
[{'content': 'Red velvety appearance of the gastric mucosa is seen in poisoning with: \nSelect and explain. \nA. Abrus precatorius, B. Lead, C. Arsenic, D. Copper', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Red velvety appearance of mucosa of stomach is seen in Arsenic poisoning.', 'role': 'assistant'}]