This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Which of the following is an adverse effects of beta-2-agonist? \nSelect and explain. \nA. Hypoglycemia, B. Hypomegnesemia, C. Hypophosphatemia, D. Hypokalemia', 'role': 'user'}, {'content': "Answer: D \nExplanation: Hypokalemia. Beta-2-agonist causes a brief spell of hyperkalemia followed by hypokalemia. Doesn't causes hypoglycemia, however delays the recovery from hypoglycemia.", 'role': 'assistant'}]