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: Surgery
Hernia is prevented by ? 
Select and explain. 
A. Scarpa's fascia, B. Transversalis fascia, C. External oblique, D. Lacunar ligament
C: External oblique
Answer: C: External oblique 
Explanation: Ans. is 'c' i.e. External oblique