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: Microbiology
Most common defect of congenital rubella syndrome 
Select and explain. 
A. salt and pepper retinopathy, B. Cataract, C. Sensorineural deafness, D. PDA
C: Sensorineural deafness
Answer: C: Sensorineural deafness 
Explanation: None