<prompt> A newborn baby was brought with the history multiple episodes of bilious projectile vomiting. X-ray abdomen was done. What is the diagnosis?Duodenal atresiaJejunal atresiaIleal atresiaHyperophic pyloric stenosis  <response>: Single bubble appearance: Hyperophic pyloric stenosis Double bubble appearance: Duodenal atresia annular pancreas Triple bubble appearance: Jejunal atresia 