This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gastrointestinal tract, Subject name: Pediatrics
[{'content': 'Cause of "bloody" vomitus in a neonate \nSelect and explain. \nA. Meckel\'s diveiculum, B. Intussusception, C. Malrotation, D. Cholecystitis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Meckel&;s dieiculum may cause severe hemorrhage due to peptic ulceration. The blood is usually passed per rectum and is maroon in colour. it may cause bloody vomitus. Ref : BAILEY AND LOVE&;S SHO PRACTICE OF SURGERY,24 TH EDITION PG NO:1159', 'role': 'assistant'}]