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 the metabolic abnormalities sign in congenital hypertrophic pyloric stenosis \nSelect and explain. \nA. Hyperkalemic metabolic alkalosis, B. Hypokalemic metabolic alkalosis, C. Hypokalemic metabolic acidosis, D. Hyperkalemic metabolic acidosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: It will cause hypokalemic hypochloremic metabolic alkalosis with aciduria', 'role': 'assistant'}]