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': 'Which is an intermediate acting insulin? \nSelect and explain. \nA. Insulin lispro, B. Regular insuin, C. NPH insulin, D. Insulin glargine', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., NPH insulin", 'role': 'assistant'}]