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
Which is Not true regarding Hyperophic pyloric stenosis - 
Select and explain. 
A. Ultrasound is not useful for diagnosis, B. Usually presents between 2 - 8 weeks, C. Common in males, D. Dilated stomach with minimal gas
A: Ultrasound is not useful for diagnosis
Answer: A: Ultrasound is not useful for diagnosis 
Explanation: Ans is 'a' ie. U/S is not useful for diagnosis Option A is absolutely wrong statement as U/S is the inv. of choice for hyperophic pyloric stenosis. Already explained in Previous question.