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
Hereditary retinoblastoma develop from the following chromosomal deletions 
Select and explain. 
A. 13q 14, B. 13 p 14, C. 14 p 13, D. 14 q 13
A: 13q 14
Answer: A: 13q 14 
Explanation: Most commonly retinoblastoma sporadic. Most common mode of inheritance is heriditaery retinoblastoma is autosomal dominant