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
Paradoxical Aciduria is seen - 
Select and explain. 
A. Congenital Hypertrophic Pyloric Stenosis, B. Duodenal Ulcer, C. Achalsia Cardia, D. Crohn's Disease
A: Congenital Hypertrophic Pyloric Stenosis
Answer: A: Congenital Hypertrophic Pyloric Stenosis 
Explanation: Ans. is 'a' i.e., Congenital Hypertrophic Pyloric Stenosis o Biochemical abnormality in congenital hypertrophic pyloric stenosis is a regular feature of AIIMS and AI examinations it has been repeated several times, o The biochemical abnormalities seen are:1. Hypokalemia2. Hypochloremia3. Alkalosis and4. Paradoxical aciduria