This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Surgery
[{'content': 'Which one of the following is not a feature of congenital hyperophic pyloric stenosis \nSelect and explain. \nA. More common in males, B. Projectile vomiting, C. Diarrhea, D. Malnutrition', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Congenital hyperophic pyloric stenosis is a proximal type of intestinal obstruction, so it results in absolute constipation in which neither flatus or faeces is passed. Reference SRB 5 th edition page no:821', 'role': 'assistant'}]