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
Lens subluxation occurs in all except: 
Select and explain. 
A. Homocystinuria, B. Ehlers-Danlos syndrome, C. Congenital syphilis, D. Congenital rubella
D: Congenital rubella
Answer: D: Congenital rubella 
Explanation: Ans. Congenital rubella