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
Familial retinoblastoma: 
Select and explain. 
A. Has autosomal recessive inheritance, B. More commonly bilateral, C. Due to mutation, D. More common than sporadic retinoblastoma
B: More commonly bilateral
Answer: B: More commonly bilateral 
Explanation: Ans. More commonly bilateral