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: Pathology
[{'content': 'Cancer suppressor gene is impoant in which malignancy - \nSelect and explain. \nA. Retinoblastoma, B. Malignant melanoma, C. Liver carcinoma, D. Lung cancer', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Retinoblastoma", 'role': 'assistant'}]