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
. Hirschprung's disease is treated by 
Select and explain. 
A. Colostomy, B. Excision of aganglionic segment, C. Colectomy, D. Sodium chloride wash
B: Excision of aganglionic segment
Answer: B: Excision of aganglionic segment 
Explanation: None