This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cytotoxic Anticancer Drugs, Subject name: Pharmacology
All of the following are examples of alkylating agents except:- 
Select and explain. 
A. Procarbazine, B. Melphalan, C. Busulfan, D. Bleomycin
D: Bleomycin
Answer: D: Bleomycin 
Explanation: ALKYLATING AGENTS If: Ifosfamide Bus: Busulfan Not: Nitrosoureas Present: Procarbazine Take: Temozolomide My: Melphalan Cycle: Cyclophosphamide