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
Commonest intraocular tumour in children is: 
Select and explain. 
A. Retinoblastoma, B. Malignant melanoma, C. Teratoma, D. Neuroblastoma
A: Retinoblastoma
Answer: A: Retinoblastoma 
Explanation: Retinoblastoma