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
[{'content': 'What is true regarding congenital hyperophic pyloric stenosis - \nSelect and explain. \nA. More common in gilrs, B. Hypochloremic alkalosis, C. Hellers myotomy is the procedure of choice, D. Most often manifests at bih', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Hypochloremic alkalosis Heller's myotomy is the surgery for Achlasia Cardia, not HPS.", 'role': 'assistant'}]