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: Unknown
Which of the following statins can be administered at any time during the day? 
Select and explain. 
A. Lovastatin, B. Simvastatin, C. Pravastatin, D. Atorvastatin
D: Atorvastatin
Answer: D: Atorvastatin 
Explanation: Atorvastatin. Atorvastatin and rosuvastatin can be administered at any time of the day due to long half-lives (>12 hours). All other statins have a short half-life (<4 hours), hence given just before bedtime.