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': 'Bone marrow depressive drugs in the treatment of AIDS patient are : a) Didanosine b) Zalcitabine c) Zidovudine d) Cotrimoxazole e) Ganciclovir \nSelect and explain. \nA. abc, B. ace, C. bce, D. cde', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]