This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
[{'content': 'Hereditary retinoblastoma develop from the following chromosomal deletions \nSelect and explain. \nA. 13q 14, B. 13 p 14, C. 14 p 13, D. 14 q 13', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most commonly retinoblastoma sporadic. Most common mode of inheritance is heriditaery retinoblastoma is autosomal dominant', 'role': 'assistant'}]