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': 'Imipenem. True statement about it is: \nSelect and explain. \nA. Narrow spectrum of action, B. Easily broken by beta lactamase, C. Used with cilastatin, D. Used with sulbactam', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Used with cilastatin', 'role': 'assistant'}]