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: Pathology
The finish type of congenital nephrotic syndrome occurs due to gene mutations affecting the following protein - 
Select and explain. 
A. Podocin, B. Alpha-actinin, C. Nephrin, D. CD2 activated protein
C: Nephrin
Answer: C: Nephrin 
Explanation: None