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
Metabolic disturbance seen with pyloric stenosis:March 2007, March 2013 (a, b, d, e) 
Select and explain. 
A. Hypokalemic hyponatremic alkalosis, B. Hyperkalemia, C. Hyperchloremic acidosis, D. Hypernatremia
A: Hypokalemic hyponatremic alkalosis
Answer: A: Hypokalemic hyponatremic alkalosis 
Explanation: Ans. A: Hypokalemic hyponatremic alkalosis