This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General surgery, Subject name: Surgery
[{'content': 'Paralytic ileus caused by \nSelect and explain. \nA. Hypokalemia, B. Hypoglycemia, C. Hyperkalemia, D. Hypercalcemia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Hypokalemia leads to decreased smooth muscle contraction leading to decreased peristalsis and thus paralytic ileus. Pg NO.1296 BAILEY 27TH EDITION', 'role': 'assistant'}]