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
Which of the following drug is used to counter act the gastric irritation produced by administration of NSAID: 
Select and explain. 
A. Roxatidine, B. Pirenzipine, C. Betaxolol, D. Misoprostol
D: Misoprostol
Answer: D: Misoprostol 
Explanation: None