This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Stomach & Duodenum, Subject name: Surgery
A patient of peptic ulcer disease. When investigated endoscopically showed chronic antral gastritis. Which of the following dye will be able to stain the specimen? 
Select and explain. 
A. PAS, B. Zeihl-Neilson stain, C. Gram stain, D. Warthin-Starry stain
D: Warthin-Starry stain
Answer: D: Warthin-Starry stain 
Explanation: Ans. (d) Warthin-Starry stainRef: Sabiston 20th Edition, Pages 1197-1198* The stain used for H. pylori are --Warthin Starry and Silver stain.* Other stain used is Giemsa stain.