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': 'The half life of I133 - \nSelect and explain. \nA. 4 hours, B. 4 days, C. 6 days, D. 8 days', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e. 8 days", 'role': 'assistant'}]