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': "Which of the following 'statins' has the longest half life ? \nSelect and explain. \nA. Cerivastatin, B. Rosuvastatin, C. Atorvastatin, D. Simvastatin", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]