This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Benign Gastric Disease, Subject name: Surgery
Congenital pyloric stenosis present with: 
Select and explain. 
A. Hypokalemic metabolic acidosis, B. Hypokalemic metabolic alkalosis, C. Hyperkalemic metabolic acidosis, D. Hyperkalemic metabolic alkalosis
B: Hypokalemic metabolic alkalosis
Answer: B: Hypokalemic metabolic alkalosis 
Explanation: Ans. (b) Hypokalemic metabolic alkalosisRef: Bailey & Love 26th ed. ch 63 /1023