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
LT antagonists are used in asthma for ? 
Select and explain. 
A. Along with beta agonists to reduce steroids, B. In place of beta blockers as sole therapy, C. Prophylactic therapy for mild to moderate asthma, D. Definitive therapy in acute attack of asthma
C: Prophylactic therapy for mild to moderate asthma
Answer: C: Prophylactic therapy for mild to moderate asthma 
Explanation: Ans. is 'c' i.e., Prophylactic therapy for mild to moderate asthma Monteleukast and zafirleucast are cystenyl LT1 (cys LT1) receptor antagonists. They are indicated for prophylactic therapy of mild to moderate asthma as alternatives to inhaled glucocoicoids.