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': 'Most common side effect of Beta 2-agonists is \nSelect and explain. \nA. Palpitations, B. Hyperglycemia, C. Tremors, D. Hyperkalemia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Tremor:\xa0Most common side effect of Beta 2 agonists.', 'role': 'assistant'}]