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': 'Which of the following drug is cell cycle phase specific? \nSelect and explain. \nA. Ifosfamide, B. Bleomycin, C. Cisplatin, D. Chlorambucil', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Bleomycin Bleomycin is specific for G2 phase. o Alkylating agents (Ifosfamide, chlorambucil) and platinum compound (cisplatin) are cell cycle nonspecific.", 'role': 'assistant'}]