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 belong to which class? 
Select and explain. 
A. Alkylating agent, B. Antimetabolite, C. Taxanes, D. Antibiotics
A: Alkylating agent
Answer: A: Alkylating agent 
Explanation: None