This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pharmacology
[{'content': 'sho acting acting beta 2 agonist \nSelect and explain. \nA. Formoterol, B. Isoprenaline, C. Salbutamol, D. salmeterol', 'role': 'user'}, {'content': 'Answer: C \nExplanation: sho-acting beta2 agonists- salbutamol., terbutaline, pirbuterol long-acting- salmeterol, formoterol, clenbuterol ref kd Tripathi 8th ed', 'role': 'assistant'}]