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: Medicine
[{'content': 'Imipenem, a newer antibiotic with a broad antibacterial spectrum, is coadministered with cilastin because - \nSelect and explain. \nA. The combination of these antibiotics is Synergistic against Pseudomonas species, B. Cilastin aids the gastrointestinal absorption of the active moiety, imipenem, C. Cilastin inhibits a Beta-lactamase that destroys imipenem, D. Cilastin inhibits an enzyme in the kidney that destroys imipenem', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]