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': "Urine appears 'Liquid Gold' in which poisoning: \nSelect and explain. \nA. Heavy metals, B. Barbiturate(Amphetamine), C. Organophosphorous, D. Lead poisoning", 'role': 'user'}, {'content': "Answer: B \nExplanation: B i.e. Barbiturate Barbiturate poisoning presents with features of shock i.e. hemo-concentration & oliguriaQ, therefore the urine is highly concentrated & deep yellowQ. I think this could very well mean 'Liquid gold'. Liquid gold is a slang used for urine of amphetamine addictsQ, which is collected and sold because 40% of amphetamine is excreted unchanged in urine.", 'role': 'assistant'}]