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 antineoplastic drug is a peptide \nSelect and explain. \nA. Bleomycin, B. Aspaeme, C. Valinomycin, D. Dactinomycin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refer Katzung 10th/895 KDT 6/e p 826 Bleomycin is a small peptide Bleomycin is a mixture of closely related glycolypeptide antibiotics having potent anti tumor activity', 'role': 'assistant'}]