This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Carcinogenesis, Subject name: Pathology
[{'content': 'Mutation in malignant melanoma- \nSelect and explain. \nA. N-myc, B. CDK2A, C. RET, D. None', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., CDK2A "In melanoma cells, numbers of mutations and/or dysregulated expression of B-Rof, N-Ras, CDK2A, MDM2, PTEN, p53 have been recognized". --Textbook of carcinogenesis', 'role': 'assistant'}]