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': 'Metabolic abnormality seen in congenital hyperophic pyloric stenosis is? \nSelect and explain. \nA. Hypochloremic hypokalemic metabolic alkalosis, B. Hyperchloremic hypokalemic metabolic alkalosis, C. Hypochloremic hypokalemic metabolic acidosis, D. Hyperchloremic hypokalemic metabolic acidosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Hypochloremic hypokalemic metabolic alkalosisProiectile nonbillotrs vomiting is the initial synptoms of pyloric stenosis, The vomiting usually stas alter 3 weeks of age, but symptoms may develop as early as the lst week of life and as late as the 5 months of life.Hpyochloremic hypokalemic metabolic alkalosis.', 'role': 'assistant'}]