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': 'Which of the following are alkylating agents ? a) Cyclophosphamide b) Ifosfamide c) Paclitaxel d) Methotrexate e) Vincristine \nSelect and explain. \nA. ad, B. c, C. ab, D. ac', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]