This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
Which of the following is a long acting insulin preparation? 
Select and explain. 
A. Insulin lente, B. Isophane insulin, C. Insulin lispro, D. Insulin detemir
D: Insulin detemir
Answer: D: Insulin detemir 
Explanation: Ans. is 'd' i.e., Insulin detemir * Insulin detemir and insulin glargine are the long acting insulin preparations.