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
Cause of hydrocoele in infants is 
Select and explain. 
A. Patent gubernaculum, B. Patent processus vaginalis, C. Cyst of morgagni, D. Harmonal factors
B: Patent processus vaginalis
Answer: B: Patent processus vaginalis 
Explanation: None