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 dose related side effect of salbutamol is: \nSelect and explain. \nA. Nervousness, B. Tremor, C. Palpitation, D. Restlessness', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Tremor', 'role': 'assistant'}]