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
Selective COX-2 inhibitors are- 
Select and explain. 
A. Celecoxib, B. Indomethacin, C. Naproxen, D. All
A: Celecoxib
Answer: A: Celecoxib 
Explanation: Ans. is 'a' i.e., Celecoxib o COX-2 inhibitors are i) Celecoxib iii) Valdecoxib v) Rofecoxib ii) Etoricoxib vi) Lumitracoxib vi) Parecoxib