This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Asthma, Subject name: Pharmacology
Vilanterol is FDA approved for treatment of: 
Select and explain. 
A. Asthma, B. COPD, C. Both, D. None
B: COPD
Answer: B: COPD 
Explanation: Ans. B. COPDVery long Acting Beta2 Agonists (VLABA) are approved only for treatment of COPD. The drugs in this class area. Olodaterolb. Vilanterolc. Carmoterold. Indicaterol