This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General Pharmacology, Subject name: Pharmacology
[{'content': 'What is the clearance of a substance, if its concentration in plasma is 10 mg%, concentration in urine is 100 mg% and urine flow is 2 ml/min? \nSelect and explain. \nA. 0.02 ml/min, B. 0.2 ml/min, C. 2 ml/min, D. 20 ml/min', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. 20ml/min.rate of elimination = amount of drug excreted per hour concentration in urine x urine flow 2mg/min = 100 mg% x 2 ml/minNow Cl = RoE/Plasma concentration Therefore, Clearance =2mg/min/10mg%=20ml/min.', 'role': 'assistant'}]