This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
[{'content': 'Which type of alkylating antineoplastic drug is Lomustine \nSelect and explain. \nA. Nitrogen musturds, B. Nitrosoureas, C. Alkyl sulfonate, D. Triazine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ALKYLATING AGENTS 1)Nitrogen mustards:- Cyclophosphamide, Ifosfamide, Chlorambucil, Melphalan 2)Ethylenimine :- Thio-TEPA 3)Alkyl sulfonate :- Busulfan 4)Nitrosoureas:- Carmustine (BCNU), Lomustine (CCNU) , 5)Triazine :-Dacarbazine (DTIC), Temozolomide 6)Methylhydrazine :-Procarbazine Ref:- kd tripathi; pg num:-858', 'role': 'assistant'}]