This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
Most common cause of leukocoria in newborn is 
Select and explain. 
A. Congenital cataract, B. Toxocara infection, C. Retinoblastoma, D. CMV infection
A: Congenital cataract
Answer: A: Congenital cataract 
Explanation: .