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: Medicine
All of the following drugs are useful in the treatment of a patient with acute bronchial asthma except 
Select and explain. 
A. Ipratropium, B. Salbutamol, C. Montelukast, D. Hydrocortisone
C: Montelukast
Answer: C: Montelukast 
Explanation: None