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': 'Ifosfamide belongs to which group of anticancer drugs: \nSelect and explain. \nA. Alkylating agents, B. Antimetobolites, C. Mitotic inhibitors, D. Topoisomerase inhibitors', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Alkylating agents', 'role': 'assistant'}]