This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Retinoblastoma gene is located on? \nSelect and explain. \nA. Chromosome 6, B. Chromosome 9, C. Chromosome 13, D. Chromosome 2l', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Robbins basic pathology 6th edition. Chapter Neoplasia. Pge no. 286. Retinoblastoma gene is located on chromosome no. 13.', 'role': 'assistant'}]