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
A 60 year male presented with the feature of coloured halos was examined with fincham's test, which revealed that halos split and then reunion, Diagnosis is: 
Select and explain. 
A. Acute congestive glaucoma, B. Open angle glaucoma, C. Senile immature cataract, D. Mucopurulant conjunctivitis
C: Senile immature cataract
Answer: C: Senile immature cataract 
Explanation: C i.e. Senile immature cataract