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 is an - 
Select and explain. 
A. Alkylating agent, B. Antimetabolite, C. Folate antagonist, D. Plant alkaloid
A: Alkylating agent
Answer: A: Alkylating agent 
Explanation: Ans. is 'a' i.e., Alkylating agent