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: Pediatrics
[{'content': 'Which of the following is a rapid acting insulin? \nSelect and explain. \nA. Glargine, B. Detemir, C. Lente, D. Glulisine', 'role': 'user'}, {'content': "Answer: D \nExplanation: d. Glulisine(Ref: Nelson's 20/e p 2760-2780, Ghai 8/e p 541-548)Ultrashort acting Insulins include: Insulin Lispro, Glulisine and Aspart.", 'role': 'assistant'}]