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: Ophthalmology
All of them are true except: 
Select and explain. 
A. Retiniblastomas are hereditry 40%, nonhereditary 60%, B. Retiniblastomas are B/L 30%, U/L 70%, C. Retiniblastomas are familial 6%, non-familial 94%, D. All are true
D: All are true
Answer: D: All are true 
Explanation: Ans. All are true