This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small & Large Intestine, Subject name: Surgery
Bilious vomiting is seen in all except: 
Select and explain. 
A. Jejunal atresia, B. Volvulus of small intestine, C. Duodenal atresia, D. Pyloric stenosis
D: Pyloric stenosis
Answer: D: Pyloric stenosis 
Explanation: Ans: d (Pyloric stenosis)Ref: Bailey & Love, 24th ed, p. 1033 & 23rd ed, p. 899