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': 'A child on β2 agonists for treatment of bronchial asthma may exhibit all of the following features EXCEPT: \nSelect and explain. \nA. Tremors, B. Hypoglycemia, C. Hypokalemia, D. Bronchodilation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]