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
What is true regarding congenital hypertrophic pyloric stenosis - 
Select and explain. 
A. More common in gilrs, B. Hypochloremic alkalosis, C. Hellers myotomy is the procedure of choice, D. Most often manifests at birth
B: Hypochloremic alkalosis
Answer: B: Hypochloremic alkalosis 
Explanation: Heller's myotomy is the surgery for Achlasia Cardia, not HPS.