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: Pharmacology
[{'content': 'A young male Kallu is brought to the hospital with severe asthma. The pharmacokinetics of theophylline include the following parameters: Vd = 35 L; CL = 48 ml/min; half life is 8 hrs. If an intravenous infusion of theophylline is started at a rate of 0.48 mg/min, how long will it take to reach 93.75% of the final steady state ? \nSelect and explain. \nA. Approximately 48 min, B. Approximately 5.8 hrs, C. Approximately 8 hrs, D. Approximately 32 hrs', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]