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
Fecal soiling in children is most commonly due to - 
Select and explain. 
A. Hirschsprung's disease, B. Chronic constipation, C. Rectal atresia, D. None of the above
B: Chronic constipation
Answer: B: Chronic constipation 
Explanation: None