This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Toxicology - 1, Subject name: Forensic Medicine
[{'content': 'In this poisoning, the vomitus is: \nSelect and explain. \nA. Bluish green, B. Black, C. Brown, D. Red velvetty', 'role': 'user'}, {'content': 'Answer: A \nExplanation: GIT symptoms with boric acid can mimics acute gastroentritis. Nausea, vomiting (bluish green), haematemesis, diarrhoea (bluish green)', 'role': 'assistant'}]