This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Pharmacology), Subject name: Pharmacology
Which of the following drug is a selective COX-2 inhibitor? 
Select and explain. 
A. Ketorolac, B. Etoricoxib, C. Piroxicam, D. Nimesulide
B: Etoricoxib
Answer: B: Etoricoxib 
Explanation: (Ref: Katzung 14th ed. P 323, 647)Non-steroidal anti-inflammatory drugs classificationSelective COX-2 Inhibitor (Coxibs)Non-selective COX-1 and 2 inhibitor* Celecoxib* Etoricoxib* Valdecoxib* Rofecoxib* Parecoxib* Indomethacin* Ibuprofen* Naproxen* Piroxicam* Aspirin* Ketoprofen