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': 'Anti-HIV drug combination that should not be used \nSelect and explain. \nA. Zidovudine + Stavudine, B. Atazanavir + Indinavir., C. Didanosine/stavudine + Zalcitabine, D. All of the above.', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anti-HIV drug combinations that should NOT be used are:\n\nZidovudine + Stavudine: Pharmacological antagonism (compete for intracellular phosphorylation)\nAtazanavir + Indinavir: Additive unconjugated hyperbilirubinemia.\nDidanosine/stavudine + Zalcitabine: Additive peripheral neuropathy.\nLamivudine + Zalcitabine: In vitro antagonism.', 'role': 'assistant'}]