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
All are used in bronchial asthma EXCEPT: March 2004 
Select and explain. 
A. Salbutamol, B. Morphine, C. Aminophylline, D. Steroid
B: Morphine
Answer: B: Morphine 
Explanation: Ans. B i.e. Morphine