This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacokinetics, Subject name: Pharmacology
[{'content': 'If rate of elimination of a new drug is 20 mg/hr at a steady state plasma concentration of 10 mg/L, then its clearance will be: \nSelect and explain. \nA. 0.5 L/hr, B. 2.0 L/hr, C. 5.0 L/hr, D. 20 L/hr', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (CL) = Rate of elimination/ Plasma concentration (C) = 20 mg/hr / 10 mg/L = 2 L/hr', 'role': 'assistant'}]