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
[{'content': 'Which of the following is a long acting insulin preparation? \nSelect and explain. \nA. Insulin lente, B. Isophane insulin, C. Insulin lispro, D. Insulin detemir', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Insulin detemir * Insulin detemir and insulin glargine are the long acting insulin preparations.", 'role': 'assistant'}]