This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Small Intestine - Small Bowel Obstruction, Subject name: Surgery
[{'content': 'This condition is caused by: \nSelect and explain. \nA. Paralytic Ileus, B. Hyperkalemia, C. Acute intestinal obstruction, D. Malnutrition', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Paralytic Ileus.Image shows presence of multiple air fluid levels suggestive of paralytic ileus. Causes are--1. Postoperative2. Infection - typhoid3. Reflex - following fractures of spine or retroperitoneal hemorrhage4. Uremia - following prostatectomy5. Hypokalemia Image source- style="font-family: Times New Roman, Times, serif">', 'role': 'assistant'}]