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
Cancer suppressor gene is impoant in which malignancy - 
Select and explain. 
A. Retinoblastoma, B. Malignant melanoma, C. Liver carcinoma, D. Lung cancer
A: Retinoblastoma
Answer: A: Retinoblastoma 
Explanation: Ans. is 'a' i.e., Retinoblastoma