This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Neoplastic Agents, Subject name: Pharmacology
[{'content': 'Cyclophosphamide is? \nSelect and explain. \nA. Alkylating agent, B. Antitumor antibiotic, C. Monoclonal antibody, D. Antimetabolites', 'role': 'user'}, {'content': 'Answer: A \nExplanation: ANSWER: (A) Alkylating agentREF: Harrison\'s 17th edition chapter 8, KDT, Goodman GillmanSee APPENDIX-37 for "CLASSIFICATION OF CANCER CHEMOTHERAPY AGENTS"', 'role': 'assistant'}]