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': 'All of the following preparations of insulin are rapid and short-acting EXCEPT: \nSelect and explain. \nA. Lispro, B. Aspart, C. Glargine, D. NPH', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]