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': 'True about aminoglycosides is all EXCEPT: \nSelect and explain. \nA. Excreted unchanged in urine, B. Distributed only extracellularly, C. Are bacteriostatic, D. Teratogenic', 'role': 'user'}, {'content': 'Answer: C \nExplanation: The aminoglycosides are bactericidal antibiotics, all having the same general pattern of action.', 'role': 'assistant'}]