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
Ifosfamide belongs to which group of anticancer drugs? 
Select and explain. 
A. Alkylating agents, B. Antimetabolites, C. Mitotic inhibitors, D. Topoisomerase inhibitors
A: Alkylating agents
Answer: A: Alkylating agents 
Explanation: Ifosfamide is an alkylating agent.